<?xml version="1.0" encoding="UTF-8" ?>
<?xml-stylesheet type="text/xsl" href="https://community.element14.com/cfs-file/__key/system/syndication/rss.xsl" media="screen"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/"><channel><title>Build a Phonograph Preamplifier - How Hard Can It Be? -- Episode 537</title><link>https://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/27460/build-a-phonograph-preamplifier---how-hard-can-it-be----episode-537</link><description /><dc:language>en-US</dc:language><generator>Telligent Community 12</generator><item><title>Build a Phonograph Preamplifier - How Hard Can It Be? -- Episode 537</title><link>https://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/27460/build-a-phonograph-preamplifier---how-hard-can-it-be----episode-537</link><pubDate>Fri, 11 Feb 2022 08:24:00 GMT</pubDate><guid isPermaLink="false">93d5dcb4-84c2-446f-b2cb-99731719e767:c288b5a6-ca80-4520-823c-33dc341c4901</guid><dc:creator>Matt</dc:creator><comments>https://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/27460/build-a-phonograph-preamplifier---how-hard-can-it-be----episode-537#comments</comments><description>Current Revision posted to Documents by Matt on 2/11/2022 8:24:00 AM&lt;br /&gt;
&lt;p style="margin:0;"&gt;&lt;a href="https://youtu.be/5KqACCRKhH4"&gt;https://youtu.be/5KqACCRKhH4&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;p style="margin:0;"&gt;&lt;/p&gt;
&lt;p style="margin:0;padding:0px;"&gt;&amp;nbsp;&lt;/p&gt;
&lt;p style="background-color:#e9f6fc;border:1px solid #b8d7e5;margin:0;max-width:744px;padding:8px;"&gt;&lt;span style="color:#000000;font-family:&amp;#39;Open Sans&amp;#39;, Arial, sans-serif;text-align:justify;"&gt;&lt;span&gt;Like many of our hosts, Matthew is an aficionado of vintage technology. In this project, Matthew is completely rebuilding a Califone 1400 series portable phonograph from the early 1980s to improve its playback quality. The first obstacle he has to overcome is rebuilding the preamplifier circuit to bring the raw phono signals from the tonearm up to RIAA line level, but he&amp;#39;s having a little trouble with the op-amp chip. How hard could it be to build a simple preamp from scratch?&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;p style="margin:0;padding:0px;"&gt;&amp;nbsp;&lt;/p&gt;
&lt;h3 id="mcetoc_1fqtf4n6q5"&gt;Supplemental Content:&lt;/h3&gt;
&lt;ul&gt;
&lt;li&gt;&lt;a href="/challenges-projects/element14-presents/b/blog/posts/single-stage-single-channel-phono-preamp-with-power-supply-schematic-565604472" data-e14adj="t"&gt;Single Stage, Single Channel Phono Preamp With Power Supply Schematic&lt;/a&gt;&lt;/li&gt;
&lt;/ul&gt;
&lt;h2 id="mcetoc_1fqtf1e0l0"&gt;&lt;br /&gt;&lt;span style="color:#3334ca;"&gt;&lt;/span&gt;&lt;/h2&gt;
&lt;h3 id="mcetoc_1fqtf4n6q5"&gt;Bill of Materials&lt;/h3&gt;
&lt;p&gt;&lt;/p&gt;
&lt;table class="e14-product-bom-main"&gt;
&lt;tbody&gt;
&lt;tr&gt;
&lt;th&gt;Product Name&lt;/th&gt;
&lt;th&gt;Manufacturer&lt;/th&gt;
&lt;th&gt;Quantity&lt;/th&gt;
&lt;th&gt;&lt;a id="e14-product-link-7fac2" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=3117310,2368010 closest equivalent,2675792~2,9339043~2,2068933 closest equivalent~2&amp;nsku=33AH4547,96M0296,05AC0526~2,38K0326~2,48W7597~2&amp;COM=e14c-noscript&amp;CMP=e14c-noscript&amp;osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_BUY_KIT" class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('7fac2'));" data-farnell="3117310,2368010 closest equivalent,2675792~2,9339043~2,2068933 closest equivalent~2" data-newark="33AH4547,96M0296,05AC0526~2,38K0326~2,48W7597~2" data-comoverride="" data-cmpoverride="" data-cpc=",,undefined~2,undefined~2,undefined~2" data-avnetemea=",,undefined~2,undefined~2,undefined~2" data-avnetema=",,undefined~2,undefined~2,undefined~2" data-avnetasia=",,undefined~2,undefined~2,undefined~2" &gt;Buy Kit&lt;/a&gt; &lt;/th&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;NE5532AP OP AMP, DUAL LOW NOISE, 5532, DIP8&lt;/td&gt;
&lt;td&gt;TI&lt;/td&gt;
&lt;td&gt;1&lt;/td&gt;
&lt;td&gt;&lt;a id="e14-product-link-81438" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=3117310&amp;nsku=33AH4547&amp;COM=e14c-noscript&amp;CMP=e14c-noscript&amp;osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('81438'));" data-farnell="3117310" data-newark="33AH4547" data-comoverride="" data-cmpoverride="" data-cpc="undefined" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" &gt;Buy Now&lt;/a&gt; &lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;WAU12-1000 AC/AC Power Supply, External Plug In, Fixed, 1 Output, 120 VAC, 12 W, 12 VAC, 1 A&lt;/td&gt;
&lt;td&gt;Triad Magnetics&lt;/td&gt;
&lt;td&gt;1&lt;/td&gt;
&lt;td&gt;&lt;a id="e14-product-link-0cb43" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2368010 closest equivalent&amp;nsku=96M0296&amp;COM=e14c-noscript&amp;CMP=e14c-noscript&amp;osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('0cb43'));" data-farnell="2368010 closest equivalent" data-newark="96M0296" data-comoverride="" data-cmpoverride="" data-cpc="undefined" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" &gt;Buy Now&lt;/a&gt; &lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;1N4002+ Standard Recovery Diode, 100 V, 1 A, Single, 1.1 V, 30 A&lt;/td&gt;
&lt;td&gt;MULTICOMP PRO&lt;/td&gt;
&lt;td&gt;2&lt;/td&gt;
&lt;td&gt;&lt;a id="e14-product-link-fe910" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2675792&amp;nsku=05AC0526&amp;COM=e14c-noscript&amp;CMP=e14c-noscript&amp;osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('fe910'));" data-farnell="2675792" data-newark="05AC0526" data-comoverride="" data-cmpoverride="" data-cpc="undefined" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" &gt;Buy Now&lt;/a&gt; &lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;MCF 0.25W 100R Through Hole Resistor, 100 ohm, MCF Series, 250 mW, &amp;plusmn; 5%, Axial Leaded, 250 V&lt;/td&gt;
&lt;td&gt;MULTICOMP PRO&lt;/td&gt;
&lt;td&gt;2&lt;/td&gt;
&lt;td&gt;&lt;a id="e14-product-link-b1809" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=9339043&amp;nsku=38K0326&amp;COM=e14c-noscript&amp;CMP=e14c-noscript&amp;osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('b1809'));" data-farnell="9339043" data-newark="38K0326" data-comoverride="" data-cmpoverride="" data-cpc="undefined" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" &gt;Buy Now&lt;/a&gt; &lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;ECA-1CM101B Electrolytic Capacitor, 100 &amp;micro;F, 16 V, &amp;plusmn; 20%, Radial Leaded, 2000 hours @ 85&amp;deg;C, Polar&lt;/td&gt;
&lt;td&gt;Panasonic&lt;/td&gt;
&lt;td&gt;2&lt;/td&gt;
&lt;td&gt;&lt;a id="e14-product-link-73afc" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2068933 closest equivalent&amp;nsku=48W7597&amp;COM=e14c-noscript&amp;CMP=e14c-noscript&amp;osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('73afc'));" data-farnell="2068933 closest equivalent" data-newark="48W7597" data-comoverride="" data-cmpoverride="" data-cpc="undefined" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" &gt;Buy Now&lt;/a&gt; &lt;/td&gt;
&lt;/tr&gt;
&lt;/tbody&gt;
&lt;/table&gt;
&lt;h2 id="mcetoc_1fqtf48m84"&gt;&lt;span style="color:#3334ca;"&gt;&lt;/span&gt;&lt;/h2&gt;
&lt;div class="migration-injected-attachments"&gt;
&lt;div style="font-weight:bold;margin:15px 0 5px 0;"&gt;&lt;/div&gt;
&lt;/div&gt;
&lt;div style="background:#ffffff;border:1px solid #dadada;margin:0;padding:14px 16px 16px 18px;vertical-align:top;"&gt;
&lt;div style="display:inline-block;float:left;padding:0px 25px 8px 0px;"&gt;&lt;a href="/challengesprojects/element14-presents/" data-e14adj="t"&gt;&lt;img alt="element14 presents" src="/e14/assets/legacy/2018/e14PresentsJune818.png" width="180px" /&gt;&lt;/a&gt;&lt;/div&gt;
&lt;div style="display:inline-block;vertical-align:top;width:70%;"&gt;&lt;span style="font-size:18px;font-weight:bold;"&gt;&amp;nbsp;&lt;/span&gt;
&lt;p style="margin:0;"&gt;&lt;span&gt;&lt;a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/" data-e14adj="t"&gt;element14 presents&lt;/a&gt;&lt;/span&gt;&amp;nbsp; &lt;strong&gt;|&lt;/strong&gt;&amp;nbsp; &lt;span style="padding-right:5px;"&gt;&lt;a class="jive-link-wiki-small" href="/challenges-projects/element14-presents/vcp-program/w/documents/3718/vcp-biography-airbornesurfer---matt-eargle" data-e14adj="t"&gt;About Matt&lt;/a&gt;&amp;nbsp;&lt;/span&gt;&lt;strong&gt;|&lt;/strong&gt;&amp;nbsp; &lt;a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/project-videos/" data-e14adj="t"&gt;Project Videos&lt;/a&gt;&lt;/p&gt;
&lt;/div&gt;
&lt;/div&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;

&lt;div style="font-size: 90%;"&gt;Tags: airbornesurfer, opampsch, Califone record player rebuild, DIY amplifier power supply, DIY preamp power supply, element14 presents, matt eargle, Califone 1430k, e14p_MAS, Califone phonograph, DIY phono preamp, friday_release, opamp power supply, califone record player&lt;/div&gt;
</description></item><item><title>Episode 537: Build a Phonograph Preamplifier - How Hard Can It Be?</title><link>https://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/27460/build-a-phonograph-preamplifier---how-hard-can-it-be----episode-537/revision/8</link><pubDate>Thu, 07 Jul 2022 21:35:14 GMT</pubDate><guid isPermaLink="false">93d5dcb4-84c2-446f-b2cb-99731719e767:c288b5a6-ca80-4520-823c-33dc341c4901</guid><dc:creator>saradetwiler</dc:creator><comments>https://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/27460/build-a-phonograph-preamplifier---how-hard-can-it-be----episode-537#comments</comments><description>Revision 8 posted to Documents by saradetwiler on 7/7/2022 9:35:14 PM&lt;br /&gt;
&lt;p style="margin:0;"&gt;&lt;a href="https://youtu.be/5KqACCRKhH4"&gt;https://youtu.be/5KqACCRKhH4&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;p style="margin:0;"&gt;&lt;/p&gt;
&lt;p style="margin:0;padding:0px;"&gt;&amp;nbsp;&lt;/p&gt;
&lt;p style="background-color:#e9f6fc;border:1px solid #b8d7e5;margin:0;max-width:744px;padding:8px;"&gt;&lt;span style="color:#000000;font-family:&amp;#39;Open Sans&amp;#39;, Arial, sans-serif;text-align:justify;"&gt;&lt;span&gt;Like many of our hosts, Matthew is an aficionado of vintage technology. In this project, Matthew is completely rebuilding a Califone 1400 series portable phonograph from the early 1980s to improve its playback quality. The first obstacle he has to overcome is rebuilding the preamplifier circuit to bring the raw phono signals from the tonearm up to RIAA line level, but he&amp;#39;s having a little trouble with the op-amp chip. How hard could it be to build a simple preamp from scratch?&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;p style="margin:0;padding:0px;"&gt;&amp;nbsp;&lt;/p&gt;
&lt;h3 id="mcetoc_1fqtf4n6q5"&gt;Supplemental Content:&lt;/h3&gt;
&lt;ul&gt;
&lt;li&gt;&lt;a href="/challenges-projects/element14-presents/b/blog/posts/single-stage-single-channel-phono-preamp-with-power-supply-schematic-565604472"&gt;Single Stage, Single Channel Phono Preamp With Power Supply Schematic&lt;/a&gt;&lt;/li&gt;
&lt;/ul&gt;
&lt;h2 id="mcetoc_1fqtf1e0l0"&gt;&lt;br /&gt;&lt;span style="color:#3334ca;"&gt;&lt;/span&gt;&lt;/h2&gt;
&lt;h3 id="mcetoc_1fqtf4n6q5"&gt;Bill of Materials&lt;/h3&gt;
&lt;p&gt;&lt;/p&gt;
&lt;table class="e14-product-bom-main"&gt;
&lt;tbody&gt;
&lt;tr&gt;
&lt;th&gt;Product Name&lt;/th&gt;
&lt;th&gt;Manufacturer&lt;/th&gt;
&lt;th&gt;Quantity&lt;/th&gt;
&lt;th&gt;&lt;a id="e14-product-link-70f04" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=3117310,2368010 closest equivalent,2675792~2,9339043~2,2068933 closest equivalent~2&amp;nsku=33AH4547,96M0296,05AC0526~2,38K0326~2,48W7597~2&amp;COM=e14c-noscript&amp;CMP=e14c-noscript&amp;osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_BUY_KIT" class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('70f04'));" data-farnell="3117310,2368010 closest equivalent,2675792~2,9339043~2,2068933 closest equivalent~2" data-newark="33AH4547,96M0296,05AC0526~2,38K0326~2,48W7597~2" data-comoverride="" data-cmpoverride="" data-cpc=",,undefined~2,undefined~2,undefined~2" data-avnetemea=",,undefined~2,undefined~2,undefined~2" data-avnetema=",,undefined~2,undefined~2,undefined~2" data-avnetasia=",,undefined~2,undefined~2,undefined~2" &gt;Buy Kit&lt;/a&gt; &lt;/th&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;NE5532AP OP AMP, DUAL LOW NOISE, 5532, DIP8&lt;/td&gt;
&lt;td&gt;TI&lt;/td&gt;
&lt;td&gt;1&lt;/td&gt;
&lt;td&gt;&lt;a id="e14-product-link-a04c1" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=3117310&amp;nsku=33AH4547&amp;COM=e14c-noscript&amp;CMP=e14c-noscript&amp;osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('a04c1'));" data-farnell="3117310" data-newark="33AH4547" data-comoverride="" data-cmpoverride="" data-cpc="undefined" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" &gt;Buy Now&lt;/a&gt; &lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;WAU12-1000 AC/AC Power Supply, External Plug In, Fixed, 1 Output, 120 VAC, 12 W, 12 VAC, 1 A&lt;/td&gt;
&lt;td&gt;Triad Magnetics&lt;/td&gt;
&lt;td&gt;1&lt;/td&gt;
&lt;td&gt;&lt;a id="e14-product-link-b47c8" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2368010 closest equivalent&amp;nsku=96M0296&amp;COM=e14c-noscript&amp;CMP=e14c-noscript&amp;osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('b47c8'));" data-farnell="2368010 closest equivalent" data-newark="96M0296" data-comoverride="" data-cmpoverride="" data-cpc="undefined" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" &gt;Buy Now&lt;/a&gt; &lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;1N4002+ Standard Recovery Diode, 100 V, 1 A, Single, 1.1 V, 30 A&lt;/td&gt;
&lt;td&gt;MULTICOMP PRO&lt;/td&gt;
&lt;td&gt;2&lt;/td&gt;
&lt;td&gt;&lt;a id="e14-product-link-c8231" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2675792&amp;nsku=05AC0526&amp;COM=e14c-noscript&amp;CMP=e14c-noscript&amp;osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('c8231'));" data-farnell="2675792" data-newark="05AC0526" data-comoverride="" data-cmpoverride="" data-cpc="undefined" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" &gt;Buy Now&lt;/a&gt; &lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;MCF 0.25W 100R Through Hole Resistor, 100 ohm, MCF Series, 250 mW, &amp;plusmn; 5%, Axial Leaded, 250 V&lt;/td&gt;
&lt;td&gt;MULTICOMP PRO&lt;/td&gt;
&lt;td&gt;2&lt;/td&gt;
&lt;td&gt;&lt;a id="e14-product-link-3d66a" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=9339043&amp;nsku=38K0326&amp;COM=e14c-noscript&amp;CMP=e14c-noscript&amp;osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('3d66a'));" data-farnell="9339043" data-newark="38K0326" data-comoverride="" data-cmpoverride="" data-cpc="undefined" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" &gt;Buy Now&lt;/a&gt; &lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;ECA-1CM101B Electrolytic Capacitor, 100 &amp;micro;F, 16 V, &amp;plusmn; 20%, Radial Leaded, 2000 hours @ 85&amp;deg;C, Polar&lt;/td&gt;
&lt;td&gt;Panasonic&lt;/td&gt;
&lt;td&gt;2&lt;/td&gt;
&lt;td&gt;&lt;a id="e14-product-link-a2fa1" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2068933 closest equivalent&amp;nsku=48W7597&amp;COM=e14c-noscript&amp;CMP=e14c-noscript&amp;osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('a2fa1'));" data-farnell="2068933 closest equivalent" data-newark="48W7597" data-comoverride="" data-cmpoverride="" data-cpc="undefined" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" &gt;Buy Now&lt;/a&gt; &lt;/td&gt;
&lt;/tr&gt;
&lt;/tbody&gt;
&lt;/table&gt;
&lt;h2 id="mcetoc_1fqtf48m84"&gt;&lt;span style="color:#3334ca;"&gt;&lt;/span&gt;&lt;/h2&gt;
&lt;div class="migration-injected-attachments"&gt;
&lt;div style="font-weight:bold;margin:15px 0 5px 0;"&gt;&lt;/div&gt;
&lt;/div&gt;
&lt;div style="background:#ffffff;border:1px solid #dadada;margin:0;padding:14px 16px 16px 18px;vertical-align:top;"&gt;
&lt;div style="display:inline-block;float:left;padding:0px 25px 8px 0px;"&gt;&lt;a href="/challengesprojects/element14-presents/"&gt;&lt;img alt="element14 presents" src="/e14/assets/legacy/2018/e14PresentsJune818.png" width="180px" /&gt;&lt;/a&gt;&lt;/div&gt;
&lt;div style="display:inline-block;vertical-align:top;width:70%;"&gt;&lt;span style="font-size:18px;font-weight:bold;"&gt;&amp;nbsp;&lt;/span&gt;
&lt;p style="margin:0;"&gt;&lt;span&gt;&lt;a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/"&gt;element14 presents&lt;/a&gt;&lt;/span&gt;&amp;nbsp; &lt;strong&gt;|&lt;/strong&gt;&amp;nbsp; &lt;span style="padding-right:5px;"&gt;&lt;a class="jive-link-wiki-small" href="/challenges-projects/element14-presents/vcp-program/w/documents/3718/vcp-biography-airbornesurfer---matt-eargle"&gt;About Matt&lt;/a&gt;&amp;nbsp;&lt;/span&gt;&lt;strong&gt;|&lt;/strong&gt;&amp;nbsp; &lt;a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/project-videos/"&gt;Project Videos&lt;/a&gt;&lt;/p&gt;
&lt;/div&gt;
&lt;/div&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;

&lt;div style="font-size: 90%;"&gt;Tags: airbornesurfer, opampsch, Califone record player rebuild, DIY amplifier power supply, DIY preamp power supply, element14 presents, matt eargle, Califone 1430k, e14p_MAS, Califone phonograph, DIY phono preamp, friday_release, opamp power supply, califone record player&lt;/div&gt;
</description></item><item><title>Episode 537: Build a Phonograph Preamplifier - How Hard Can It Be?</title><link>https://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/27460/build-a-phonograph-preamplifier---how-hard-can-it-be----episode-537/revision/7</link><pubDate>Wed, 23 Feb 2022 18:00:39 GMT</pubDate><guid isPermaLink="false">93d5dcb4-84c2-446f-b2cb-99731719e767:c288b5a6-ca80-4520-823c-33dc341c4901</guid><dc:creator>kellyhensen</dc:creator><comments>https://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/27460/build-a-phonograph-preamplifier---how-hard-can-it-be----episode-537#comments</comments><description>Revision 7 posted to Documents by kellyhensen on 2/23/2022 6:00:39 PM&lt;br /&gt;
&lt;p style="margin:0;"&gt;&lt;a href="https://youtu.be/5KqACCRKhH4"&gt;https://youtu.be/5KqACCRKhH4&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;p style="margin:0;"&gt;&lt;/p&gt;
&lt;p style="margin:0;padding:0px;"&gt;&amp;nbsp;&lt;/p&gt;
&lt;p style="background-color:#e9f6fc;border:1px solid #b8d7e5;margin:0;max-width:744px;padding:8px;"&gt;&lt;span style="color:#000000;font-family:&amp;#39;Open Sans&amp;#39;, Arial, sans-serif;text-align:justify;"&gt;&lt;span&gt;Like many of our hosts, Matthew is an aficionado of vintage technology. In this project, Matthew is completely rebuilding a Califone 1400 series portable phonograph from the early 1980s to improve its playback quality. The first obstacle he has to overcome is rebuilding the preamplifier circuit to bring the raw phono signals from the tonearm up to RIAA line level, but he&amp;#39;s having a little trouble with the op-amp chip. How hard could it be to build a simple preamp from scratch?&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;p style="margin:0;padding:0px;"&gt;&amp;nbsp;&lt;/p&gt;
&lt;h3 id="mcetoc_1fqtf4n6q5"&gt;Supplemental Content:&lt;/h3&gt;
&lt;ul&gt;
&lt;li&gt;&lt;a href="/challenges-projects/element14-presents/b/blog/posts/single-stage-single-channel-phono-preamp-with-power-supply-schematic-565604472"&gt;Single Stage, Single Channel Phono Preamp With Power Supply Schematic&lt;/a&gt;&lt;/li&gt;
&lt;/ul&gt;
&lt;h2 id="mcetoc_1fqtf1e0l0"&gt;&lt;br /&gt;&lt;span style="color:#3334ca;"&gt;&lt;/span&gt;&lt;/h2&gt;
&lt;h3 id="mcetoc_1fqtf4n6q5"&gt;Bill of Materials&lt;/h3&gt;
&lt;p&gt;&lt;/p&gt;
&lt;table class="e14-product-bom-main"&gt;
&lt;tbody&gt;
&lt;tr&gt;
&lt;th&gt;Product Name&lt;/th&gt;
&lt;th&gt;Manufacturer&lt;/th&gt;
&lt;th&gt;Quantity&lt;/th&gt;
&lt;th&gt;&lt;a id="e14-product-link-38b95" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=3117310,2368010 closest equivalent,2675792~2,9339043~2,2068933 closest equivalent~2&amp;nsku=33AH4547,96M0296,05AC0526~2,38K0326~2,48W7597~2&amp;COM=e14c-noscript&amp;CMP=e14c-noscript&amp;osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_BUY_KIT" class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('38b95'));" data-farnell="3117310,2368010 closest equivalent,2675792~2,9339043~2,2068933 closest equivalent~2" data-newark="33AH4547,96M0296,05AC0526~2,38K0326~2,48W7597~2" data-comoverride="" data-cmpoverride="" data-cpc=",,undefined~2,undefined~2,undefined~2" data-avnetemea=",,undefined~2,undefined~2,undefined~2" data-avnetema=",,undefined~2,undefined~2,undefined~2" data-avnetasia=",,undefined~2,undefined~2,undefined~2" &gt;Buy Kit&lt;/a&gt; &lt;/th&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;NE5532AP OP AMP, DUAL LOW NOISE, 5532, DIP8&lt;/td&gt;
&lt;td&gt;TI&lt;/td&gt;
&lt;td&gt;1&lt;/td&gt;
&lt;td&gt;&lt;a id="e14-product-link-e4cd3" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=3117310&amp;nsku=33AH4547&amp;COM=e14c-noscript&amp;CMP=e14c-noscript&amp;osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('e4cd3'));" data-farnell="3117310" data-newark="33AH4547" data-comoverride="" data-cmpoverride="" data-cpc="undefined" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" &gt;Buy Now&lt;/a&gt; &lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;WAU12-1000 AC/AC Power Supply, External Plug In, Fixed, 1 Output, 120 VAC, 12 W, 12 VAC, 1 A&lt;/td&gt;
&lt;td&gt;Triad Magnetics&lt;/td&gt;
&lt;td&gt;1&lt;/td&gt;
&lt;td&gt;&lt;a id="e14-product-link-5413d" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2368010 closest equivalent&amp;nsku=96M0296&amp;COM=e14c-noscript&amp;CMP=e14c-noscript&amp;osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('5413d'));" data-farnell="2368010 closest equivalent" data-newark="96M0296" data-comoverride="" data-cmpoverride="" data-cpc="undefined" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" &gt;Buy Now&lt;/a&gt; &lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;1N4002+ Standard Recovery Diode, 100 V, 1 A, Single, 1.1 V, 30 A&lt;/td&gt;
&lt;td&gt;MULTICOMP PRO&lt;/td&gt;
&lt;td&gt;2&lt;/td&gt;
&lt;td&gt;&lt;a id="e14-product-link-690d9" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2675792&amp;nsku=05AC0526&amp;COM=e14c-noscript&amp;CMP=e14c-noscript&amp;osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('690d9'));" data-farnell="2675792" data-newark="05AC0526" data-comoverride="" data-cmpoverride="" data-cpc="undefined" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" &gt;Buy Now&lt;/a&gt; &lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;MCF 0.25W 100R Through Hole Resistor, 100 ohm, MCF Series, 250 mW, &amp;plusmn; 5%, Axial Leaded, 250 V&lt;/td&gt;
&lt;td&gt;MULTICOMP PRO&lt;/td&gt;
&lt;td&gt;2&lt;/td&gt;
&lt;td&gt;&lt;a id="e14-product-link-48f20" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=9339043&amp;nsku=38K0326&amp;COM=e14c-noscript&amp;CMP=e14c-noscript&amp;osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('48f20'));" data-farnell="9339043" data-newark="38K0326" data-comoverride="" data-cmpoverride="" data-cpc="undefined" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" &gt;Buy Now&lt;/a&gt; &lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;ECA-1CM101B Electrolytic Capacitor, 100 &amp;micro;F, 16 V, &amp;plusmn; 20%, Radial Leaded, 2000 hours @ 85&amp;deg;C, Polar&lt;/td&gt;
&lt;td&gt;Panasonic&lt;/td&gt;
&lt;td&gt;2&lt;/td&gt;
&lt;td&gt;&lt;a id="e14-product-link-37d02" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2068933 closest equivalent&amp;nsku=48W7597&amp;COM=e14c-noscript&amp;CMP=e14c-noscript&amp;osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('37d02'));" data-farnell="2068933 closest equivalent" data-newark="48W7597" data-comoverride="" data-cmpoverride="" data-cpc="undefined" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" &gt;Buy Now&lt;/a&gt; &lt;/td&gt;
&lt;/tr&gt;
&lt;/tbody&gt;
&lt;/table&gt;
&lt;h2 id="mcetoc_1fqtf48m84"&gt;&lt;span style="color:#3334ca;"&gt;&lt;/span&gt;&lt;/h2&gt;
&lt;div class="migration-injected-attachments"&gt;
&lt;div style="font-weight:bold;margin:15px 0 5px 0;"&gt;&lt;/div&gt;
&lt;/div&gt;
&lt;div style="background:#ffffff;border:1px solid #dadada;margin:0;padding:14px 16px 16px 18px;vertical-align:top;"&gt;
&lt;div style="display:inline-block;float:left;padding:0px 25px 8px 0px;"&gt;&lt;a href="/challengesprojects/element14-presents/"&gt;&lt;img alt="element14 presents" src="/e14/assets/legacy/2018/e14PresentsJune818.png" width="180px" /&gt;&lt;/a&gt;&lt;/div&gt;
&lt;div style="display:inline-block;vertical-align:top;width:70%;"&gt;&lt;span style="font-size:18px;font-weight:bold;"&gt;&amp;nbsp;&lt;/span&gt;
&lt;p style="margin:0;"&gt;&lt;span&gt;&lt;a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/"&gt;element14 presents&lt;/a&gt;&lt;/span&gt;&amp;nbsp; &lt;strong&gt;|&lt;/strong&gt;&amp;nbsp; &lt;span style="padding-right:5px;"&gt;&lt;a class="jive-link-wiki-small" href="/challenges-projects/element14-presents/vcp-program/w/documents/3718/vcp-biography-airbornesurfer---matt-eargle"&gt;About Matt&lt;/a&gt;&amp;nbsp;&lt;/span&gt;&lt;strong&gt;|&lt;/strong&gt;&amp;nbsp; &lt;a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/project-videos/"&gt;Project Videos&lt;/a&gt;&lt;/p&gt;
&lt;/div&gt;
&lt;/div&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;

&lt;div style="font-size: 90%;"&gt;Tags: airbornesurfer, opampsch, Califone record player rebuild, DIY amplifier power supply, DIY preamp power supply, element14 presents, matt eargle, Califone 1430k, Califone phonograph, DIY phono preamp, friday_release, opamp power supply, califone record player&lt;/div&gt;
</description></item><item><title>Episode 537: Build a Phonograph Preamplifier - How Hard Can It Be?</title><link>https://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/27460/build-a-phonograph-preamplifier---how-hard-can-it-be----episode-537/revision/6</link><pubDate>Wed, 23 Feb 2022 17:56:54 GMT</pubDate><guid isPermaLink="false">93d5dcb4-84c2-446f-b2cb-99731719e767:c288b5a6-ca80-4520-823c-33dc341c4901</guid><dc:creator>kellyhensen</dc:creator><comments>https://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/27460/build-a-phonograph-preamplifier---how-hard-can-it-be----episode-537#comments</comments><description>Revision 6 posted to Documents by kellyhensen on 2/23/2022 5:56:54 PM&lt;br /&gt;
&lt;p style="margin:0;"&gt;&lt;a href="https://youtu.be/5KqACCRKhH4"&gt;https://youtu.be/5KqACCRKhH4&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;p style="margin:0;"&gt;&lt;/p&gt;
&lt;p style="margin:0;padding:0px;"&gt;&amp;nbsp;&lt;/p&gt;
&lt;p style="background-color:#e9f6fc;border:1px solid #b8d7e5;margin:0;max-width:744px;padding:8px;"&gt;&lt;span style="color:#000000;font-family:&amp;#39;Open Sans&amp;#39;, Arial, sans-serif;text-align:justify;"&gt;&lt;span&gt;Like many of our hosts, Matthew is an aficionado of vintage technology. In this project, Matthew is completely rebuilding a Califone 1400 series portable phonograph from the early 1980s to improve its playback quality. The first obstacle he has to overcome is rebuilding the preamplifier circuit to bring the raw phono signals from the tonearm up to RIAA line level, but he&amp;#39;s having a little trouble with the op-amp chip. How hard could it be to build a simple preamp from scratch?&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;p style="margin:0;padding:0px;"&gt;&amp;nbsp;&lt;/p&gt;
&lt;h3 id="mcetoc_1fqtf4n6q5"&gt;Supplemental Content:&lt;/h3&gt;
&lt;ul&gt;
&lt;li&gt;&lt;a href="/challenges-projects/element14-presents/b/blog/posts/single-stage-single-channel-phono-preamp-with-power-supply-schematic-565604472"&gt;Single Stage, Single Channel Phono Preamp With Power Supply Schematic&lt;/a&gt;&lt;/li&gt;
&lt;/ul&gt;
&lt;h2 id="mcetoc_1fqtf1e0l0"&gt;&lt;br /&gt;&lt;span style="color:#3334ca;"&gt;&lt;/span&gt;&lt;/h2&gt;
&lt;h3 id="mcetoc_1fqtf4n6q5"&gt;Bill of Materials&lt;/h3&gt;
&lt;p&gt;&lt;/p&gt;
&lt;table class="e14-product-bom-main"&gt;
&lt;tbody&gt;
&lt;tr&gt;
&lt;th&gt;Product Name&lt;/th&gt;
&lt;th&gt;Manufacturer&lt;/th&gt;
&lt;th&gt;Quantity&lt;/th&gt;
&lt;th&gt;&lt;a id="e14-product-link-6ff69" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=3117310,2368010 closest equivalent,2675792~2,9339043~2,2068933 closest equivalent~2&amp;nsku=33AH4547,96M0296,05AC0526~2,38K0326~2,48W7597~2&amp;COM=e14c-noscript&amp;CMP=e14c-noscript&amp;osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_BUY_KIT" class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('6ff69'));" data-farnell="3117310,2368010 closest equivalent,2675792~2,9339043~2,2068933 closest equivalent~2" data-newark="33AH4547,96M0296,05AC0526~2,38K0326~2,48W7597~2" data-comoverride="" data-cmpoverride="" data-cpc=",,undefined~2,undefined~2,undefined~2" data-avnetemea=",,undefined~2,undefined~2,undefined~2" data-avnetema=",,undefined~2,undefined~2,undefined~2" data-avnetasia=",,undefined~2,undefined~2,undefined~2" &gt;Buy Kit&lt;/a&gt; &lt;/th&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;NE5532AP OP AMP, DUAL LOW NOISE, 5532, DIP8&lt;/td&gt;
&lt;td&gt;TI&lt;/td&gt;
&lt;td&gt;1&lt;/td&gt;
&lt;td&gt;&lt;a id="e14-product-link-96a5c" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=3117310&amp;nsku=33AH4547&amp;COM=e14c-noscript&amp;CMP=e14c-noscript&amp;osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('96a5c'));" data-farnell="3117310" data-newark="33AH4547" data-comoverride="" data-cmpoverride="" data-cpc="undefined" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" &gt;Buy Now&lt;/a&gt; &lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;WAU12-1000 AC/AC Power Supply, External Plug In, Fixed, 1 Output, 120 VAC, 12 W, 12 VAC, 1 A&lt;/td&gt;
&lt;td&gt;Triad Magnetics&lt;/td&gt;
&lt;td&gt;1&lt;/td&gt;
&lt;td&gt;&lt;a id="e14-product-link-eb665" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2368010 closest equivalent&amp;nsku=96M0296&amp;COM=e14c-noscript&amp;CMP=e14c-noscript&amp;osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('eb665'));" data-farnell="2368010 closest equivalent" data-newark="96M0296" data-comoverride="" data-cmpoverride="" data-cpc="undefined" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" &gt;Buy Now&lt;/a&gt; &lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;1N4002+ Standard Recovery Diode, 100 V, 1 A, Single, 1.1 V, 30 A&lt;/td&gt;
&lt;td&gt;MULTICOMP PRO&lt;/td&gt;
&lt;td&gt;2&lt;/td&gt;
&lt;td&gt;&lt;a id="e14-product-link-3caf8" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2675792&amp;nsku=05AC0526&amp;COM=e14c-noscript&amp;CMP=e14c-noscript&amp;osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('3caf8'));" data-farnell="2675792" data-newark="05AC0526" data-comoverride="" data-cmpoverride="" data-cpc="undefined" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" &gt;Buy Now&lt;/a&gt; &lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;MCF 0.25W 100R Through Hole Resistor, 100 ohm, MCF Series, 250 mW, &amp;plusmn; 5%, Axial Leaded, 250 V&lt;/td&gt;
&lt;td&gt;MULTICOMP PRO&lt;/td&gt;
&lt;td&gt;2&lt;/td&gt;
&lt;td&gt;&lt;a id="e14-product-link-ff381" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=9339043&amp;nsku=38K0326&amp;COM=e14c-noscript&amp;CMP=e14c-noscript&amp;osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('ff381'));" data-farnell="9339043" data-newark="38K0326" data-comoverride="" data-cmpoverride="" data-cpc="undefined" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" &gt;Buy Now&lt;/a&gt; &lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;ECA-1CM101B Electrolytic Capacitor, 100 &amp;micro;F, 16 V, &amp;plusmn; 20%, Radial Leaded, 2000 hours @ 85&amp;deg;C, Polar&lt;/td&gt;
&lt;td&gt;Panasonic&lt;/td&gt;
&lt;td&gt;2&lt;/td&gt;
&lt;td&gt;&lt;a id="e14-product-link-a7712" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2068933 closest equivalent&amp;nsku=48W7597&amp;COM=e14c-noscript&amp;CMP=e14c-noscript&amp;osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('a7712'));" data-farnell="2068933 closest equivalent" data-newark="48W7597" data-comoverride="" data-cmpoverride="" data-cpc="undefined" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" &gt;Buy Now&lt;/a&gt; &lt;/td&gt;
&lt;/tr&gt;
&lt;/tbody&gt;
&lt;/table&gt;
&lt;h2 id="mcetoc_1fqtf48m84"&gt;&lt;span style="color:#3334ca;"&gt;&lt;/span&gt;&lt;/h2&gt;
&lt;div class="migration-injected-attachments"&gt;
&lt;div style="font-weight:bold;margin:15px 0 5px 0;"&gt;&lt;/div&gt;
&lt;/div&gt;
&lt;div style="background:#ffffff;border:1px solid #dadada;margin:0;padding:14px 16px 16px 18px;vertical-align:top;"&gt;
&lt;div style="display:inline-block;float:left;padding:0px 25px 8px 0px;"&gt;&lt;a href="/challengesprojects/element14-presents/"&gt;&lt;img alt="element14 presents" src="/e14/assets/legacy/2018/e14PresentsJune818.png" width="180px" /&gt;&lt;/a&gt;&lt;/div&gt;
&lt;div style="display:inline-block;vertical-align:top;width:70%;"&gt;&lt;span style="font-size:18px;font-weight:bold;"&gt;&amp;nbsp;&lt;/span&gt;
&lt;p style="margin:0;"&gt;&lt;span&gt;&lt;a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/"&gt;element14 presents&lt;/a&gt;&lt;/span&gt;&amp;nbsp; &lt;strong&gt;|&lt;/strong&gt;&amp;nbsp; &lt;span style="padding-right:5px;"&gt;&lt;a class="jive-link-wiki-small" href="/challenges-projects/element14-presents/vcp-program/w/documents/3718/vcp-biography-airbornesurfer---matt-eargle"&gt;About Matt&lt;/a&gt;&amp;nbsp;&lt;/span&gt;&lt;strong&gt;|&lt;/strong&gt;&amp;nbsp; &lt;a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/project-videos/"&gt;Project Videos&lt;/a&gt;&lt;/p&gt;
&lt;/div&gt;
&lt;/div&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;

&lt;div style="font-size: 90%;"&gt;Tags: opampsch, Califone record player rebuild, DIY amplifier power supply, DIY preamp power supply, element14 presents, matt eargle, Califone 1430k, Califone phonograph, DIY phono preamp, friday_release, opamp power supply, califone record player&lt;/div&gt;
</description></item><item><title>Episode 537: Build a Phonograph Preamplifier - How Hard Can It Be?</title><link>https://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/27460/build-a-phonograph-preamplifier---how-hard-can-it-be----episode-537/revision/5</link><pubDate>Wed, 23 Feb 2022 16:25:06 GMT</pubDate><guid isPermaLink="false">93d5dcb4-84c2-446f-b2cb-99731719e767:c288b5a6-ca80-4520-823c-33dc341c4901</guid><dc:creator>tariq.ahmad</dc:creator><comments>https://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/27460/build-a-phonograph-preamplifier---how-hard-can-it-be----episode-537#comments</comments><description>Revision 5 posted to Documents by tariq.ahmad on 2/23/2022 4:25:06 PM&lt;br /&gt;
&lt;p style="margin:0;"&gt;&lt;a href="https://youtu.be/5KqACCRKhH4"&gt;https://youtu.be/5KqACCRKhH4&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;p style="margin:0;"&gt;&lt;/p&gt;
&lt;p style="margin:0;padding:0px;"&gt;&amp;nbsp;&lt;/p&gt;
&lt;p style="background-color:#e9f6fc;border:1px solid #b8d7e5;margin:0;max-width:744px;padding:8px;"&gt;&lt;span style="color:#000000;font-family:&amp;#39;Open Sans&amp;#39;, Arial, sans-serif;text-align:justify;"&gt;&lt;span&gt;Like many of our hosts, Matthew is an aficionado of vintage technology. In this project, Matthew is completely rebuilding a Califone 1400 series portable phonograph from the early 1980s to improve its playback quality. The first obstacle he has to overcome is rebuilding the preamplifier circuit to bring the raw phono signals from the tonearm up to RIAA line level, but he&amp;#39;s having a little trouble with the op-amp chip. How hard could it be to build a simple preamp from scratch?&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;p style="margin:0;padding:0px;"&gt;&amp;nbsp;&lt;/p&gt;
&lt;h3 id="mcetoc_1fqtf4n6q5"&gt;Supplemental Content:&lt;/h3&gt;
&lt;ul&gt;
&lt;li&gt;&lt;a href="/challenges-projects/element14-presents/b/blog/posts/single-stage-single-channel-phono-preamp-with-power-supply-schematic-565604472"&gt;Single Stage, Single Channel Phono Preamp With Power Supply Schematic&lt;/a&gt;&lt;/li&gt;
&lt;/ul&gt;
&lt;h2 id="mcetoc_1fqtf1e0l0"&gt;&lt;br /&gt;&lt;span style="color:#3334ca;"&gt;&lt;/span&gt;&lt;/h2&gt;
&lt;h3 id="mcetoc_1fqtf4n6q5"&gt;Bill of Materials&lt;/h3&gt;
&lt;p&gt;&lt;/p&gt;
&lt;table class="e14-product-bom-main"&gt;
&lt;tbody&gt;
&lt;tr&gt;
&lt;th&gt;Product Name&lt;/th&gt;
&lt;th&gt;Manufacturer&lt;/th&gt;
&lt;th&gt;Quantity&lt;/th&gt;
&lt;th&gt;&lt;a id="e14-product-link-ae648" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=3117310,2368010 closest equivalent,2675792~2,9339043~2,2068933 closest equivalent~2&amp;nsku=33AH4547,96M0296,05AC0526~2,38K0326~2,48W7597~2&amp;COM=e14c-noscript&amp;CMP=e14c-noscript&amp;osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_BUY_KIT" class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('ae648'));" data-farnell="3117310,2368010 closest equivalent,2675792~2,9339043~2,2068933 closest equivalent~2" data-newark="33AH4547,96M0296,05AC0526~2,38K0326~2,48W7597~2" data-comoverride="" data-cmpoverride="" data-cpc=",,undefined~2,undefined~2,undefined~2" data-avnetemea=",,undefined~2,undefined~2,undefined~2" data-avnetema=",,undefined~2,undefined~2,undefined~2" data-avnetasia=",,undefined~2,undefined~2,undefined~2" &gt;Buy Kit&lt;/a&gt; &lt;/th&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;NE5532AP OP AMP, DUAL LOW NOISE, 5532, DIP8&lt;/td&gt;
&lt;td&gt;TI&lt;/td&gt;
&lt;td&gt;1&lt;/td&gt;
&lt;td&gt;&lt;a id="e14-product-link-7c321" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=3117310&amp;nsku=33AH4547&amp;COM=e14c-noscript&amp;CMP=e14c-noscript&amp;osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('7c321'));" data-farnell="3117310" data-newark="33AH4547" data-comoverride="" data-cmpoverride="" data-cpc="undefined" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" &gt;Buy Now&lt;/a&gt; &lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;WAU12-1000 AC/AC Power Supply, External Plug In, Fixed, 1 Output, 120 VAC, 12 W, 12 VAC, 1 A&lt;/td&gt;
&lt;td&gt;Triad Magnetics&lt;/td&gt;
&lt;td&gt;1&lt;/td&gt;
&lt;td&gt;&lt;a id="e14-product-link-104d9" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2368010 closest equivalent&amp;nsku=96M0296&amp;COM=e14c-noscript&amp;CMP=e14c-noscript&amp;osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('104d9'));" data-farnell="2368010 closest equivalent" data-newark="96M0296" data-comoverride="" data-cmpoverride="" data-cpc="undefined" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" &gt;Buy Now&lt;/a&gt; &lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;1N4002+ Standard Recovery Diode, 100 V, 1 A, Single, 1.1 V, 30 A&lt;/td&gt;
&lt;td&gt;MULTICOMP PRO&lt;/td&gt;
&lt;td&gt;2&lt;/td&gt;
&lt;td&gt;&lt;a id="e14-product-link-48463" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2675792&amp;nsku=05AC0526&amp;COM=e14c-noscript&amp;CMP=e14c-noscript&amp;osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('48463'));" data-farnell="2675792" data-newark="05AC0526" data-comoverride="" data-cmpoverride="" data-cpc="undefined" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" &gt;Buy Now&lt;/a&gt; &lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;MCF 0.25W 100R Through Hole Resistor, 100 ohm, MCF Series, 250 mW, &amp;plusmn; 5%, Axial Leaded, 250 V&lt;/td&gt;
&lt;td&gt;MULTICOMP PRO&lt;/td&gt;
&lt;td&gt;2&lt;/td&gt;
&lt;td&gt;&lt;a id="e14-product-link-c6c5d" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=9339043&amp;nsku=38K0326&amp;COM=e14c-noscript&amp;CMP=e14c-noscript&amp;osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('c6c5d'));" data-farnell="9339043" data-newark="38K0326" data-comoverride="" data-cmpoverride="" data-cpc="undefined" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" &gt;Buy Now&lt;/a&gt; &lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;ECA-1CM101B Electrolytic Capacitor, 100 &amp;micro;F, 16 V, &amp;plusmn; 20%, Radial Leaded, 2000 hours @ 85&amp;deg;C, Polar&lt;/td&gt;
&lt;td&gt;Panasonic&lt;/td&gt;
&lt;td&gt;2&lt;/td&gt;
&lt;td&gt;&lt;a id="e14-product-link-3f189" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2068933 closest equivalent&amp;nsku=48W7597&amp;COM=e14c-noscript&amp;CMP=e14c-noscript&amp;osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('3f189'));" data-farnell="2068933 closest equivalent" data-newark="48W7597" data-comoverride="" data-cmpoverride="" data-cpc="undefined" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" &gt;Buy Now&lt;/a&gt; &lt;/td&gt;
&lt;/tr&gt;
&lt;/tbody&gt;
&lt;/table&gt;
&lt;h2 id="mcetoc_1fqtf48m84"&gt;&lt;span style="color:#3334ca;"&gt;&lt;/span&gt;&lt;/h2&gt;
&lt;div class="migration-injected-attachments"&gt;
&lt;div style="font-weight:bold;margin:15px 0 5px 0;"&gt;&lt;/div&gt;
&lt;/div&gt;
&lt;div style="background:#ffffff;border:1px solid #dadada;margin:0;padding:14px 16px 16px 18px;vertical-align:top;"&gt;
&lt;div style="display:inline-block;float:left;padding:0px 25px 8px 0px;"&gt;&lt;a href="/challengesprojects/element14-presents/"&gt;&lt;img alt="element14 presents" src="/e14/assets/legacy/2018/e14PresentsJune818.png" width="180px" /&gt;&lt;/a&gt;&lt;/div&gt;
&lt;div style="display:inline-block;vertical-align:top;width:70%;"&gt;&lt;span style="font-size:18px;font-weight:bold;"&gt;&amp;nbsp;&lt;/span&gt;
&lt;p style="margin:0;"&gt;&lt;span&gt;&lt;a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/"&gt;element14 presents&lt;/a&gt;&lt;/span&gt;&amp;nbsp; &lt;strong&gt;|&lt;/strong&gt;&amp;nbsp; &lt;span style="padding-right:5px;"&gt;&lt;a class="jive-link-wiki-small" href="/challenges-projects/element14-presents/vcp-program/w/documents/3718/vcp-biography-airbornesurfer---matt-eargle"&gt;About Matt&lt;/a&gt;&amp;nbsp;&lt;/span&gt;&lt;strong&gt;|&lt;/strong&gt;&amp;nbsp; &lt;a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/project-videos/"&gt;Project Videos&lt;/a&gt;&lt;/p&gt;
&lt;/div&gt;
&lt;/div&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;

&lt;div style="font-size: 90%;"&gt;Tags: opampsch, Califone record player rebuild, DIY amplifier power supply, DIY preamp power supply, Califone 1430k, Califone phonograph, DIY phono preamp, opamp power supply, califone record player&lt;/div&gt;
</description></item><item><title>Episode 537: Build a Phonograph Preamplifier - How Hard Can It Be?</title><link>https://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/27460/build-a-phonograph-preamplifier---how-hard-can-it-be----episode-537/revision/4</link><pubDate>Fri, 18 Feb 2022 16:27:41 GMT</pubDate><guid isPermaLink="false">93d5dcb4-84c2-446f-b2cb-99731719e767:c288b5a6-ca80-4520-823c-33dc341c4901</guid><dc:creator>tariq.ahmad</dc:creator><comments>https://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/27460/build-a-phonograph-preamplifier---how-hard-can-it-be----episode-537#comments</comments><description>Revision 4 posted to Documents by tariq.ahmad on 2/18/2022 4:27:41 PM&lt;br /&gt;
&lt;p style="margin:0;"&gt;&lt;a href="https://youtu.be/5KqACCRKhH4"&gt;https://youtu.be/5KqACCRKhH4&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;p style="margin:0;"&gt;&lt;/p&gt;
&lt;p style="margin:0;padding:0px;"&gt;&amp;nbsp;&lt;/p&gt;
&lt;p style="background-color:#e9f6fc;border:1px solid #b8d7e5;margin:0;max-width:744px;padding:8px;"&gt;&lt;span style="color:#000000;font-family:&amp;#39;Open Sans&amp;#39;, Arial, sans-serif;text-align:justify;"&gt;&lt;span&gt;Like many of our hosts, Matthew is an aficionado of vintage technology. In this project, Matthew is completely rebuilding a Califone 1400 series portable phonograph from the early 1980s to improve its playback quality. The first obstacle he has to overcome is rebuilding the preamplifier circuit to bring the raw phono signals from the tonearm up to RIAA line level, but he&amp;#39;s having a little trouble with the op-amp chip. How hard could it be to build a simple preamp from scratch?&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;p style="margin:0;padding:0px;"&gt;&amp;nbsp;&lt;/p&gt;
&lt;h3 id="mcetoc_1fqtf4n6q5"&gt;Supplemental Content:&lt;/h3&gt;
&lt;ul&gt;
&lt;li&gt;&lt;a href="/challenges-projects/element14-presents/b/blog/posts/single-stage-single-channel-phono-preamp-with-power-supply-schematic-565604472"&gt;Single Stage, Single Channel Phono Preamp With Power Supply Schematic&lt;/a&gt;&lt;/li&gt;
&lt;/ul&gt;
&lt;h2 id="mcetoc_1fqtf1e0l0"&gt;&lt;br /&gt;&lt;span style="color:#3334ca;"&gt;&lt;/span&gt;&lt;/h2&gt;
&lt;h3 id="mcetoc_1fqtf4n6q5"&gt;Bill of Materials&lt;/h3&gt;
&lt;p&gt;&lt;/p&gt;
&lt;table class="e14-product-bom-main"&gt;
&lt;tbody&gt;
&lt;tr&gt;
&lt;th&gt;Product Name&lt;/th&gt;
&lt;th&gt;Manufacturer&lt;/th&gt;
&lt;th&gt;Quantity&lt;/th&gt;
&lt;th&gt;&lt;a id="e14-product-link-4a070" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=3117310,2368010 closest equivalent,2675792~2,9339043~2,2068933 closest equivalent~2&amp;nsku=33AH4547,96M0296,05AC0526~2,38K0326~2,48W7597~2&amp;COM=e14c-noscript&amp;CMP=e14c-noscript&amp;osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_BUY_KIT" class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('4a070'));" data-farnell="3117310,2368010 closest equivalent,2675792~2,9339043~2,2068933 closest equivalent~2" data-newark="33AH4547,96M0296,05AC0526~2,38K0326~2,48W7597~2" data-comoverride="" data-cmpoverride="" data-cpc=",,undefined~2,undefined~2,undefined~2" data-avnetemea=",,undefined~2,undefined~2,undefined~2" data-avnetema=",,undefined~2,undefined~2,undefined~2" data-avnetasia=",,undefined~2,undefined~2,undefined~2" &gt;Buy Kit&lt;/a&gt; &lt;/th&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;NE5532AP OP AMP, DUAL LOW NOISE, 5532, DIP8&lt;/td&gt;
&lt;td&gt;TI&lt;/td&gt;
&lt;td&gt;1&lt;/td&gt;
&lt;td&gt;&lt;a id="e14-product-link-66e6e" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=3117310&amp;nsku=33AH4547&amp;COM=e14c-noscript&amp;CMP=e14c-noscript&amp;osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('66e6e'));" data-farnell="3117310" data-newark="33AH4547" data-comoverride="" data-cmpoverride="" data-cpc="undefined" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" &gt;Buy Now&lt;/a&gt; &lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;WAU12-1000 AC/AC Power Supply, External Plug In, Fixed, 1 Output, 120 VAC, 12 W, 12 VAC, 1 A&lt;/td&gt;
&lt;td&gt;Triad Magnetics&lt;/td&gt;
&lt;td&gt;1&lt;/td&gt;
&lt;td&gt;&lt;a id="e14-product-link-2a61b" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2368010 closest equivalent&amp;nsku=96M0296&amp;COM=e14c-noscript&amp;CMP=e14c-noscript&amp;osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('2a61b'));" data-farnell="2368010 closest equivalent" data-newark="96M0296" data-comoverride="" data-cmpoverride="" data-cpc="undefined" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" &gt;Buy Now&lt;/a&gt; &lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;1N4002+ Standard Recovery Diode, 100 V, 1 A, Single, 1.1 V, 30 A&lt;/td&gt;
&lt;td&gt;MULTICOMP PRO&lt;/td&gt;
&lt;td&gt;2&lt;/td&gt;
&lt;td&gt;&lt;a id="e14-product-link-e2756" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2675792&amp;nsku=05AC0526&amp;COM=e14c-noscript&amp;CMP=e14c-noscript&amp;osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('e2756'));" data-farnell="2675792" data-newark="05AC0526" data-comoverride="" data-cmpoverride="" data-cpc="undefined" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" &gt;Buy Now&lt;/a&gt; &lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;MCF 0.25W 100R Through Hole Resistor, 100 ohm, MCF Series, 250 mW, &amp;plusmn; 5%, Axial Leaded, 250 V&lt;/td&gt;
&lt;td&gt;MULTICOMP PRO&lt;/td&gt;
&lt;td&gt;2&lt;/td&gt;
&lt;td&gt;&lt;a id="e14-product-link-02ffd" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=9339043&amp;nsku=38K0326&amp;COM=e14c-noscript&amp;CMP=e14c-noscript&amp;osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('02ffd'));" data-farnell="9339043" data-newark="38K0326" data-comoverride="" data-cmpoverride="" data-cpc="undefined" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" &gt;Buy Now&lt;/a&gt; &lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;ECA-1CM101B Electrolytic Capacitor, 100 &amp;micro;F, 16 V, &amp;plusmn; 20%, Radial Leaded, 2000 hours @ 85&amp;deg;C, Polar&lt;/td&gt;
&lt;td&gt;Panasonic&lt;/td&gt;
&lt;td&gt;2&lt;/td&gt;
&lt;td&gt;&lt;a id="e14-product-link-070bd" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2068933 closest equivalent&amp;nsku=48W7597&amp;COM=e14c-noscript&amp;CMP=e14c-noscript&amp;osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('070bd'));" data-farnell="2068933 closest equivalent" data-newark="48W7597" data-comoverride="" data-cmpoverride="" data-cpc="undefined" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" &gt;Buy Now&lt;/a&gt; &lt;/td&gt;
&lt;/tr&gt;
&lt;/tbody&gt;
&lt;/table&gt;
&lt;h2 id="mcetoc_1fqtf48m84"&gt;&lt;span style="color:#3334ca;"&gt;&lt;/span&gt;&lt;/h2&gt;
&lt;div class="migration-injected-attachments"&gt;
&lt;div style="font-weight:bold;margin:15px 0 5px 0;"&gt;&lt;/div&gt;
&lt;/div&gt;
&lt;div style="background:#ffffff;border:1px solid #dadada;margin:0;padding:14px 16px 16px 18px;vertical-align:top;"&gt;
&lt;div style="display:inline-block;float:left;padding:0px 25px 8px 0px;"&gt;&lt;a href="/challengesprojects/element14-presents/"&gt;&lt;img alt="element14 presents" src="/e14/assets/legacy/2018/e14PresentsJune818.png" width="180px" /&gt;&lt;/a&gt;&lt;/div&gt;
&lt;div style="display:inline-block;vertical-align:top;width:70%;"&gt;&lt;span style="font-size:18px;font-weight:bold;"&gt;&amp;nbsp;&lt;/span&gt;
&lt;p style="margin:0;"&gt;&lt;span&gt;&lt;a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/"&gt;element14 presents&lt;/a&gt;&lt;/span&gt;&amp;nbsp; &lt;strong&gt;|&lt;/strong&gt;&amp;nbsp; &lt;span style="padding-right:5px;"&gt;&lt;a class="jive-link-wiki-small" href="/challenges-projects/element14-presents/vcp-program/w/documents/3718/vcp-biography-airbornesurfer---matt-eargle"&gt;About Matt&lt;/a&gt;&amp;nbsp;&lt;/span&gt;&lt;strong&gt;|&lt;/strong&gt;&amp;nbsp; &lt;a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/project-videos/"&gt;Project Videos&lt;/a&gt;&lt;/p&gt;
&lt;/div&gt;
&lt;/div&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;

&lt;div style="font-size: 90%;"&gt;Tags: Califone record player rebuild, DIY amplifier power supply, DIY preamp power supply, Califone 1430k, Califone phonograph, DIY phono preamp, opamp power supply, califone record player&lt;/div&gt;
</description></item><item><title>Episode 537: Build a Phonograph Preamplifier - How Hard Can It Be?</title><link>https://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/27460/build-a-phonograph-preamplifier---how-hard-can-it-be----episode-537/revision/3</link><pubDate>Thu, 03 Feb 2022 17:13:10 GMT</pubDate><guid isPermaLink="false">93d5dcb4-84c2-446f-b2cb-99731719e767:c288b5a6-ca80-4520-823c-33dc341c4901</guid><dc:creator>tariq.ahmad</dc:creator><comments>https://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/27460/build-a-phonograph-preamplifier---how-hard-can-it-be----episode-537#comments</comments><description>Revision 3 posted to Documents by tariq.ahmad on 2/3/2022 5:13:10 PM&lt;br /&gt;
&lt;p style="margin:0;"&gt;&lt;a href="https://youtu.be/5KqACCRKhH4"&gt;https://youtu.be/5KqACCRKhH4&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;p style="margin:0;"&gt;&lt;/p&gt;
&lt;p style="margin:0;padding:0px;"&gt;&amp;nbsp;&lt;/p&gt;
&lt;p style="background-color:#e9f6fc;border:1px solid #b8d7e5;margin:0;max-width:744px;padding:8px;"&gt;&lt;span style="color:#000000;font-family:&amp;#39;Open Sans&amp;#39;, Arial, sans-serif;text-align:justify;"&gt;&lt;span&gt;Like many of our hosts, Matthew is an aficionado of vintage technology. In this project, Matthew is completely rebuilding a Califone 1400 series portable phonograph from the early 1980s to improve its playback quality. The first obstacle he has to overcome is rebuilding the preamplifier circuit to bring the raw phono signals from the tonearm up to RIAA line level, but he&amp;#39;s having a little trouble with the op-amp chip. How hard could it be to build a simple preamp from scratch?&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;p style="margin:0;padding:0px;"&gt;&amp;nbsp;&lt;/p&gt;
&lt;h2 id="mcetoc_1fqtf1e0l0"&gt;&lt;span style="color:#3334ca;"&gt;&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;&lt;/p&gt;
&lt;h3 id="mcetoc_1fqtf4n6q5"&gt;Bill of Materials&lt;/h3&gt;
&lt;p&gt;&lt;/p&gt;
&lt;table class="e14-product-bom-main"&gt;
&lt;tbody&gt;
&lt;tr&gt;
&lt;th&gt;Product Name&lt;/th&gt;
&lt;th&gt;Manufacturer&lt;/th&gt;
&lt;th&gt;Quantity&lt;/th&gt;
&lt;th&gt;&lt;a id="e14-product-link-5fcfe" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=3117310,2368010 closest equivalent,2675792~2,9339043~2,2068933 closest equivalent~2&amp;nsku=33AH4547,96M0296,05AC0526~2,38K0326~2,48W7597~2&amp;COM=e14c-noscript&amp;CMP=e14c-noscript&amp;osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_BUY_KIT" class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('5fcfe'));" data-farnell="3117310,2368010 closest equivalent,2675792~2,9339043~2,2068933 closest equivalent~2" data-newark="33AH4547,96M0296,05AC0526~2,38K0326~2,48W7597~2" data-comoverride="" data-cmpoverride="" data-cpc=",,undefined~2,undefined~2,undefined~2" data-avnetemea=",,undefined~2,undefined~2,undefined~2" data-avnetema=",,undefined~2,undefined~2,undefined~2" data-avnetasia=",,undefined~2,undefined~2,undefined~2" &gt;Buy Kit&lt;/a&gt; &lt;/th&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;NE5532AP OP AMP, DUAL LOW NOISE, 5532, DIP8&lt;/td&gt;
&lt;td&gt;TI&lt;/td&gt;
&lt;td&gt;1&lt;/td&gt;
&lt;td&gt;&lt;a id="e14-product-link-70b3b" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=3117310&amp;nsku=33AH4547&amp;COM=e14c-noscript&amp;CMP=e14c-noscript&amp;osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('70b3b'));" data-farnell="3117310" data-newark="33AH4547" data-comoverride="" data-cmpoverride="" data-cpc="undefined" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" &gt;Buy Now&lt;/a&gt; &lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;WAU12-1000 AC/AC Power Supply, External Plug In, Fixed, 1 Output, 120 VAC, 12 W, 12 VAC, 1 A&lt;/td&gt;
&lt;td&gt;Triad Magnetics&lt;/td&gt;
&lt;td&gt;1&lt;/td&gt;
&lt;td&gt;&lt;a id="e14-product-link-52caf" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2368010 closest equivalent&amp;nsku=96M0296&amp;COM=e14c-noscript&amp;CMP=e14c-noscript&amp;osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('52caf'));" data-farnell="2368010 closest equivalent" data-newark="96M0296" data-comoverride="" data-cmpoverride="" data-cpc="undefined" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" &gt;Buy Now&lt;/a&gt; &lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;1N4002+ Standard Recovery Diode, 100 V, 1 A, Single, 1.1 V, 30 A&lt;/td&gt;
&lt;td&gt;MULTICOMP PRO&lt;/td&gt;
&lt;td&gt;2&lt;/td&gt;
&lt;td&gt;&lt;a id="e14-product-link-fee19" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2675792&amp;nsku=05AC0526&amp;COM=e14c-noscript&amp;CMP=e14c-noscript&amp;osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('fee19'));" data-farnell="2675792" data-newark="05AC0526" data-comoverride="" data-cmpoverride="" data-cpc="undefined" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" &gt;Buy Now&lt;/a&gt; &lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;MCF 0.25W 100R Through Hole Resistor, 100 ohm, MCF Series, 250 mW, &amp;plusmn; 5%, Axial Leaded, 250 V&lt;/td&gt;
&lt;td&gt;MULTICOMP PRO&lt;/td&gt;
&lt;td&gt;2&lt;/td&gt;
&lt;td&gt;&lt;a id="e14-product-link-5644f" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=9339043&amp;nsku=38K0326&amp;COM=e14c-noscript&amp;CMP=e14c-noscript&amp;osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('5644f'));" data-farnell="9339043" data-newark="38K0326" data-comoverride="" data-cmpoverride="" data-cpc="undefined" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" &gt;Buy Now&lt;/a&gt; &lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;ECA-1CM101B Electrolytic Capacitor, 100 &amp;micro;F, 16 V, &amp;plusmn; 20%, Radial Leaded, 2000 hours @ 85&amp;deg;C, Polar&lt;/td&gt;
&lt;td&gt;Panasonic&lt;/td&gt;
&lt;td&gt;2&lt;/td&gt;
&lt;td&gt;&lt;a id="e14-product-link-f821b" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2068933 closest equivalent&amp;nsku=48W7597&amp;COM=e14c-noscript&amp;CMP=e14c-noscript&amp;osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('f821b'));" data-farnell="2068933 closest equivalent" data-newark="48W7597" data-comoverride="" data-cmpoverride="" data-cpc="undefined" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" &gt;Buy Now&lt;/a&gt; &lt;/td&gt;
&lt;/tr&gt;
&lt;/tbody&gt;
&lt;/table&gt;
&lt;h2 id="mcetoc_1fqtf48m84"&gt;&lt;span style="color:#3334ca;"&gt;&lt;/span&gt;&lt;/h2&gt;
&lt;div class="migration-injected-attachments"&gt;
&lt;div style="font-weight:bold;margin:15px 0 5px 0;"&gt;&lt;/div&gt;
&lt;/div&gt;
&lt;div style="background:#ffffff;border:1px solid #dadada;margin:0;padding:14px 16px 16px 18px;vertical-align:top;"&gt;
&lt;div style="display:inline-block;float:left;padding:0px 25px 8px 0px;"&gt;&lt;a href="/challengesprojects/element14-presents/"&gt;&lt;img alt="element14 presents" src="/e14/assets/legacy/2018/e14PresentsJune818.png" width="180px" /&gt;&lt;/a&gt;&lt;/div&gt;
&lt;div style="display:inline-block;vertical-align:top;width:70%;"&gt;&lt;span style="font-size:18px;font-weight:bold;"&gt;&amp;nbsp;&lt;/span&gt;
&lt;p style="margin:0;"&gt;&lt;span&gt;&lt;a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/"&gt;element14 presents&lt;/a&gt;&lt;/span&gt;&amp;nbsp; &lt;strong&gt;|&lt;/strong&gt;&amp;nbsp; &lt;span style="padding-right:5px;"&gt;&lt;a class="jive-link-wiki-small" href="/challenges-projects/element14-presents/vcp-program/w/documents/3718/vcp-biography-airbornesurfer---matt-eargle"&gt;About Matt&lt;/a&gt;&amp;nbsp;&lt;/span&gt;&lt;strong&gt;|&lt;/strong&gt;&amp;nbsp; &lt;a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/project-videos/"&gt;Project Videos&lt;/a&gt;&lt;/p&gt;
&lt;/div&gt;
&lt;/div&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;

&lt;div style="font-size: 90%;"&gt;Tags: Califone record player rebuild, DIY amplifier power supply, DIY preamp power supply, Califone 1430k, Califone phonograph, DIY phono preamp, opamp power supply, califone record player&lt;/div&gt;
</description></item><item><title>Episode 537: Build a Phonograph Preamplifier - How Hard Can It Be?</title><link>https://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/27460/build-a-phonograph-preamplifier---how-hard-can-it-be----episode-537/revision/2</link><pubDate>Wed, 02 Feb 2022 16:07:31 GMT</pubDate><guid isPermaLink="false">93d5dcb4-84c2-446f-b2cb-99731719e767:c288b5a6-ca80-4520-823c-33dc341c4901</guid><dc:creator>kellyhensen</dc:creator><comments>https://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/27460/build-a-phonograph-preamplifier---how-hard-can-it-be----episode-537#comments</comments><description>Revision 2 posted to Documents by kellyhensen on 2/2/2022 4:07:31 PM&lt;br /&gt;
&lt;p style="margin:0;"&gt;&lt;a href="https://youtu.be/5KqACCRKhH4"&gt;https://youtu.be/5KqACCRKhH4&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;p style="margin:0;"&gt;&lt;/p&gt;
&lt;p style="margin:0;padding:0px;"&gt;&amp;nbsp;&lt;/p&gt;
&lt;p style="background-color:#e9f6fc;border:1px solid #b8d7e5;margin:0;max-width:744px;padding:8px;"&gt;&lt;span style="color:#000000;font-family:&amp;#39;Open Sans&amp;#39;, Arial, sans-serif;text-align:justify;"&gt;&lt;span&gt;Like many of our hosts, Matthew is an aficionado of vintage technology. In this project, Matthew is completely rebuilding a Califone 1400 series portable phonograph from the early 1980s to improve its playback quality. The first obstacle he has to overcome is rebuilding the preamplifier circuit to bring the raw phono signals from the tonearm up to RIAA line level, but he&amp;#39;s having a little trouble with the op-amp chip. How hard could it be to build a simple preamp from scratch?&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;p style="margin:0;padding:0px;"&gt;&amp;nbsp;&lt;/p&gt;
&lt;h2 id="mcetoc_1fqtf1e0l0"&gt;&lt;span style="color:#3334ca;"&gt;&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;&lt;/p&gt;
&lt;h3 id="mcetoc_1fqtf4n6q5"&gt;Bill of Materials&lt;/h3&gt;
&lt;p&gt;&lt;/p&gt;
&lt;table class="e14-product-bom-main"&gt;
&lt;tbody&gt;
&lt;tr&gt;
&lt;th&gt;Product Name&lt;/th&gt;
&lt;th&gt;Manufacturer&lt;/th&gt;
&lt;th&gt;Quantity&lt;/th&gt;
&lt;th&gt;&lt;a id="e14-product-link-7581b" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=3117310,2368010 closest equivalent,2675792~2,9339043~2,2068933 closest equivalent~2&amp;nsku=33AH4547,96M0296,05AC0526~2,38K0326~2,48W7597~2&amp;COM=e14c-noscript&amp;CMP=e14c-noscript&amp;osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_BUY_KIT" class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('7581b'));" data-farnell="3117310,2368010 closest equivalent,2675792~2,9339043~2,2068933 closest equivalent~2" data-newark="33AH4547,96M0296,05AC0526~2,38K0326~2,48W7597~2" data-comoverride="" data-cmpoverride="" data-cpc=",,undefined~2,undefined~2,undefined~2" data-avnetemea=",,undefined~2,undefined~2,undefined~2" data-avnetema=",,undefined~2,undefined~2,undefined~2" data-avnetasia=",,undefined~2,undefined~2,undefined~2" &gt;Buy Kit&lt;/a&gt; &lt;/th&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;NE5532AP OP AMP, DUAL LOW NOISE, 5532, DIP8&lt;/td&gt;
&lt;td&gt;TI&lt;/td&gt;
&lt;td&gt;1&lt;/td&gt;
&lt;td&gt;&lt;a id="e14-product-link-d3eaf" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=3117310&amp;nsku=33AH4547&amp;COM=e14c-noscript&amp;CMP=e14c-noscript&amp;osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('d3eaf'));" data-farnell="3117310" data-newark="33AH4547" data-comoverride="" data-cmpoverride="" data-cpc="undefined" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" &gt;Buy Now&lt;/a&gt; &lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;WAU12-1000 AC/AC Power Supply, External Plug In, Fixed, 1 Output, 120 VAC, 12 W, 12 VAC, 1 A&lt;/td&gt;
&lt;td&gt;Triad Magnetics&lt;/td&gt;
&lt;td&gt;1&lt;/td&gt;
&lt;td&gt;&lt;a id="e14-product-link-1fd6b" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2368010 closest equivalent&amp;nsku=96M0296&amp;COM=e14c-noscript&amp;CMP=e14c-noscript&amp;osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('1fd6b'));" data-farnell="2368010 closest equivalent" data-newark="96M0296" data-comoverride="" data-cmpoverride="" data-cpc="undefined" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" &gt;Buy Now&lt;/a&gt; &lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;1N4002+ Standard Recovery Diode, 100 V, 1 A, Single, 1.1 V, 30 A&lt;/td&gt;
&lt;td&gt;MULTICOMP PRO&lt;/td&gt;
&lt;td&gt;2&lt;/td&gt;
&lt;td&gt;&lt;a id="e14-product-link-4902e" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2675792&amp;nsku=05AC0526&amp;COM=e14c-noscript&amp;CMP=e14c-noscript&amp;osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('4902e'));" data-farnell="2675792" data-newark="05AC0526" data-comoverride="" data-cmpoverride="" data-cpc="undefined" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" &gt;Buy Now&lt;/a&gt; &lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;MCF 0.25W 100R Through Hole Resistor, 100 ohm, MCF Series, 250 mW, &amp;plusmn; 5%, Axial Leaded, 250 V&lt;/td&gt;
&lt;td&gt;MULTICOMP PRO&lt;/td&gt;
&lt;td&gt;2&lt;/td&gt;
&lt;td&gt;&lt;a id="e14-product-link-c288a" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=9339043&amp;nsku=38K0326&amp;COM=e14c-noscript&amp;CMP=e14c-noscript&amp;osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('c288a'));" data-farnell="9339043" data-newark="38K0326" data-comoverride="" data-cmpoverride="" data-cpc="undefined" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" &gt;Buy Now&lt;/a&gt; &lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;ECA-1CM101B Electrolytic Capacitor, 100 &amp;micro;F, 16 V, &amp;plusmn; 20%, Radial Leaded, 2000 hours @ 85&amp;deg;C, Polar&lt;/td&gt;
&lt;td&gt;Panasonic&lt;/td&gt;
&lt;td&gt;2&lt;/td&gt;
&lt;td&gt;&lt;a id="e14-product-link-ec9cc" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2068933 closest equivalent&amp;nsku=48W7597&amp;COM=e14c-noscript&amp;CMP=e14c-noscript&amp;osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('ec9cc'));" data-farnell="2068933 closest equivalent" data-newark="48W7597" data-comoverride="" data-cmpoverride="" data-cpc="undefined" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" &gt;Buy Now&lt;/a&gt; &lt;/td&gt;
&lt;/tr&gt;
&lt;/tbody&gt;
&lt;/table&gt;
&lt;h2 id="mcetoc_1fqtf48m84"&gt;&lt;span style="color:#3334ca;"&gt;&lt;/span&gt;&lt;/h2&gt;
&lt;div class="migration-injected-attachments"&gt;
&lt;div style="font-weight:bold;margin:15px 0 5px 0;"&gt;&lt;/div&gt;
&lt;/div&gt;
&lt;div style="background:#ffffff;border:1px solid #dadada;margin:0;padding:14px 16px 16px 18px;vertical-align:top;"&gt;
&lt;div style="display:inline-block;float:left;padding:0px 25px 8px 0px;"&gt;&lt;a href="/challengesprojects/element14-presents/"&gt;&lt;img alt="element14 presents" src="/e14/assets/legacy/2018/e14PresentsJune818.png" width="180px" /&gt;&lt;/a&gt;&lt;/div&gt;
&lt;div style="display:inline-block;vertical-align:top;width:70%;"&gt;&lt;span style="font-size:18px;font-weight:bold;"&gt;&amp;nbsp;&lt;/span&gt;
&lt;p style="margin:0;"&gt;&lt;span&gt;&lt;a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/"&gt;element14 presents&lt;/a&gt;&lt;/span&gt;&amp;nbsp; &lt;strong&gt;|&lt;/strong&gt;&amp;nbsp; &lt;span style="padding-right:5px;"&gt;&lt;a class="jive-link-wiki-small" href="/challenges-projects/element14-presents/vcp-program/w/documents/3718/vcp-biography-airbornesurfer---matt-eargle"&gt;About Matt&lt;/a&gt;&amp;nbsp;&lt;/span&gt;&lt;strong&gt;|&lt;/strong&gt;&amp;nbsp; &lt;a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/project-videos/"&gt;Project Videos&lt;/a&gt;&lt;/p&gt;
&lt;/div&gt;
&lt;/div&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;
</description></item><item><title>Episode 537: Build a Phonograph Preamplifier - How Hard Can It Be?</title><link>https://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/27460/build-a-phonograph-preamplifier---how-hard-can-it-be----episode-537/revision/1</link><pubDate>Wed, 02 Feb 2022 15:00:14 GMT</pubDate><guid isPermaLink="false">93d5dcb4-84c2-446f-b2cb-99731719e767:c288b5a6-ca80-4520-823c-33dc341c4901</guid><dc:creator>kellyhensen</dc:creator><comments>https://community.element14.com/challenges-projects/element14-presents/project-videos/w/documents/27460/build-a-phonograph-preamplifier---how-hard-can-it-be----episode-537#comments</comments><description>Revision 1 posted to Documents by kellyhensen on 2/2/2022 3:00:14 PM&lt;br /&gt;
&lt;p style="margin:0;"&gt;&lt;a href="https://youtu.be/5KqACCRKhH4"&gt;https://youtu.be/5KqACCRKhH4&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;p style="margin:0;"&gt;&lt;/p&gt;
&lt;p style="margin:0;padding:0px;"&gt;&amp;nbsp;&lt;/p&gt;
&lt;p style="background-color:#e9f6fc;border:1px solid #b8d7e5;margin:0;max-width:744px;padding:8px;"&gt;&lt;span style="color:#000000;font-family:&amp;#39;Open Sans&amp;#39;, Arial, sans-serif;text-align:justify;"&gt;&lt;span&gt;Like many of our hosts, Matthew is an aficionado of vintage technology. In this project, Matthew is completely rebuilding a Califone 1400 series portable phonograph from the early 1980s to improve its playback quality. The first obstacle he has to overcome is rebuilding the preamplifier circuit to bring the raw phono signals from the tonearm up to RIAA line level, but he&amp;#39;s having a little trouble with the op-amp chip. How hard could it be to build a simple preamp from scratch?&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;p style="margin:0;padding:0px;"&gt;&amp;nbsp;&lt;/p&gt;
&lt;h2 id="mcetoc_1fqtf1e0l0"&gt;&lt;span style="color:#3334ca;"&gt;&lt;/span&gt;&lt;/h2&gt;
&lt;p&gt;&lt;/p&gt;
&lt;h3 id="mcetoc_1fqtf4n6q5"&gt;Bill of Materials&lt;/h3&gt;
&lt;p&gt;&lt;/p&gt;
&lt;table class="e14-product-bom-main"&gt;
&lt;tbody&gt;
&lt;tr&gt;
&lt;th&gt;Product Name&lt;/th&gt;
&lt;th&gt;Manufacturer&lt;/th&gt;
&lt;th&gt;Quantity&lt;/th&gt;
&lt;th&gt;&lt;a id="e14-product-link-dccc4" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=3117310,2368010 closest equivalent,2675792~2,9339043~2,2068933 closest equivalent~2&amp;nsku=33AH4547,96M0296,05AC0526~2,38K0326~2,48W7597~2&amp;COM=e14c-noscript&amp;CMP=e14c-noscript&amp;osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_BUY_KIT" class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('dccc4'));" data-farnell="3117310,2368010 closest equivalent,2675792~2,9339043~2,2068933 closest equivalent~2" data-newark="33AH4547,96M0296,05AC0526~2,38K0326~2,48W7597~2" data-comoverride="" data-cmpoverride="" data-cpc=",,undefined~2,undefined~2,undefined~2" data-avnetemea=",,undefined~2,undefined~2,undefined~2" data-avnetema=",,undefined~2,undefined~2,undefined~2" data-avnetasia=",,undefined~2,undefined~2,undefined~2" &gt;Buy Kit&lt;/a&gt; &lt;/th&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;NE5532AP OP AMP, DUAL LOW NOISE, 5532, DIP8&lt;/td&gt;
&lt;td&gt;TI&lt;/td&gt;
&lt;td&gt;1&lt;/td&gt;
&lt;td&gt;&lt;a id="e14-product-link-3e654" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=3117310&amp;nsku=33AH4547&amp;COM=e14c-noscript&amp;CMP=e14c-noscript&amp;osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('3e654'));" data-farnell="3117310" data-newark="33AH4547" data-comoverride="" data-cmpoverride="" data-cpc="undefined" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" &gt;Buy Now&lt;/a&gt; &lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;WAU12-1000 AC/AC Power Supply, External Plug In, Fixed, 1 Output, 120 VAC, 12 W, 12 VAC, 1 A&lt;/td&gt;
&lt;td&gt;Triad Magnetics&lt;/td&gt;
&lt;td&gt;1&lt;/td&gt;
&lt;td&gt;&lt;a id="e14-product-link-5eec5" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2368010 closest equivalent&amp;nsku=96M0296&amp;COM=e14c-noscript&amp;CMP=e14c-noscript&amp;osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('5eec5'));" data-farnell="2368010 closest equivalent" data-newark="96M0296" data-comoverride="" data-cmpoverride="" data-cpc="undefined" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" &gt;Buy Now&lt;/a&gt; &lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;1N4002+ Standard Recovery Diode, 100 V, 1 A, Single, 1.1 V, 30 A&lt;/td&gt;
&lt;td&gt;MULTICOMP PRO&lt;/td&gt;
&lt;td&gt;2&lt;/td&gt;
&lt;td&gt;&lt;a id="e14-product-link-9d104" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2675792&amp;nsku=05AC0526&amp;COM=e14c-noscript&amp;CMP=e14c-noscript&amp;osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('9d104'));" data-farnell="2675792" data-newark="05AC0526" data-comoverride="" data-cmpoverride="" data-cpc="undefined" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" &gt;Buy Now&lt;/a&gt; &lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;MCF 0.25W 100R Through Hole Resistor, 100 ohm, MCF Series, 250 mW, &amp;plusmn; 5%, Axial Leaded, 250 V&lt;/td&gt;
&lt;td&gt;MULTICOMP PRO&lt;/td&gt;
&lt;td&gt;2&lt;/td&gt;
&lt;td&gt;&lt;a id="e14-product-link-b7886" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=9339043&amp;nsku=38K0326&amp;COM=e14c-noscript&amp;CMP=e14c-noscript&amp;osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('b7886'));" data-farnell="9339043" data-newark="38K0326" data-comoverride="" data-cmpoverride="" data-cpc="undefined" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" &gt;Buy Now&lt;/a&gt; &lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;ECA-1CM101B Electrolytic Capacitor, 100 &amp;micro;F, 16 V, &amp;plusmn; 20%, Radial Leaded, 2000 hours @ 85&amp;deg;C, Polar&lt;/td&gt;
&lt;td&gt;Panasonic&lt;/td&gt;
&lt;td&gt;2&lt;/td&gt;
&lt;td&gt;&lt;a id="e14-product-link-d2a7b" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2068933 closest equivalent&amp;nsku=48W7597&amp;COM=e14c-noscript&amp;CMP=e14c-noscript&amp;osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('d2a7b'));" data-farnell="2068933 closest equivalent" data-newark="48W7597" data-comoverride="" data-cmpoverride="" data-cpc="undefined" data-avnetemea="undefined" data-avnetema="undefined" data-avnetasia="undefined" &gt;Buy Now&lt;/a&gt; &lt;/td&gt;
&lt;/tr&gt;
&lt;/tbody&gt;
&lt;/table&gt;
&lt;h2 id="mcetoc_1fqtf48m84"&gt;&lt;span style="color:#3334ca;"&gt;&lt;/span&gt;&lt;/h2&gt;
&lt;table class="jiveBorder" style="border:1px solid #000000;width:100%;" border="1"&gt;
&lt;tbody&gt;
&lt;tr&gt;
&lt;td style="border:1px solid #000000;padding:2px;"&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;/tbody&gt;
&lt;/table&gt;
&lt;div class="migration-injected-attachments"&gt;
&lt;div style="font-weight:bold;margin:15px 0 5px 0;"&gt;Attachments:&lt;/div&gt;
&lt;div&gt;&lt;/div&gt;
&lt;table style="border:0;"&gt;
&lt;tbody&gt;
&lt;tr&gt;
&lt;td width="160"&gt;&lt;span id="attid_https://www.element14.com/community/api/core/v3/attachments/304640" class="_se_attachment"&gt;&lt;a href="https://community.element14.com/cfs-file/__key/communityserver-wikis-components-files/00-00-00-04-35/Z80_2D00_Retro_2D00_Challenge_2D00_1_2D00_CPU.pdf"&gt;community.element14.com/.../Z80_2D00_Retro_2D00_Challenge_2D00_1_2D00_CPU.pdf&lt;/a&gt;&lt;/span&gt;&lt;/td&gt;
&lt;td&gt;&lt;span style="font-size:80%;"&gt;Z80-Retro-Challenge-1-CPU.pdf&lt;/span&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td width="160"&gt;&lt;span id="attid_https://www.element14.com/community/api/core/v3/attachments/304641" class="_se_attachment"&gt;&lt;a href="https://community.element14.com/cfs-file/__key/communityserver-wikis-components-files/00-00-00-04-35/Z80_2D00_Retro_2D00_Challenge_2D00_3_2D00_ROM_2D00_27512.pdf"&gt;community.element14.com/.../Z80_2D00_Retro_2D00_Challenge_2D00_3_2D00_ROM_2D00_27512.pdf&lt;/a&gt;&lt;/span&gt;&lt;/td&gt;
&lt;td&gt;&lt;span style="font-size:80%;"&gt;Z80-Retro-Challenge-3-ROM-27512.pdf&lt;/span&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td width="160"&gt;&lt;span id="attid_https://www.element14.com/community/api/core/v3/attachments/304642" class="_se_attachment"&gt;&lt;a href="https://community.element14.com/cfs-file/__key/communityserver-wikis-components-files/00-00-00-04-35/Z80_2D00_Retro_2D00_Challenge_2D00_4_2D00_RAM_2D00_32k.pdf"&gt;community.element14.com/.../Z80_2D00_Retro_2D00_Challenge_2D00_4_2D00_RAM_2D00_32k.pdf&lt;/a&gt;&lt;/span&gt;&lt;/td&gt;
&lt;td&gt;&lt;span style="font-size:80%;"&gt;Z80-Retro-Challenge-4-RAM-32k.pdf&lt;/span&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td width="160"&gt;&lt;span id="attid_https://www.element14.com/community/api/core/v3/attachments/304643" class="_se_attachment"&gt;&lt;a href="https://community.element14.com/cfs-file/__key/communityserver-wikis-components-files/00-00-00-04-35/Z80_2D00_Retro_2D00_Challenge_2D00_6_2D00_Serial_2D00_IO.pdf"&gt;community.element14.com/.../Z80_2D00_Retro_2D00_Challenge_2D00_6_2D00_Serial_2D00_IO.pdf&lt;/a&gt;&lt;/span&gt;&lt;/td&gt;
&lt;td&gt;&lt;span style="font-size:80%;"&gt;Z80-Retro-Challenge-6-Serial-IO.pdf&lt;/span&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;/tbody&gt;
&lt;/table&gt;
&lt;p&gt;&lt;/p&gt;
&lt;/div&gt;
&lt;div style="background:#ffffff;border:1px solid #dadada;margin:0;padding:14px 16px 16px 18px;vertical-align:top;"&gt;
&lt;div style="display:inline-block;float:left;padding:0px 25px 8px 0px;"&gt;&lt;a href="/challengesprojects/element14-presents/"&gt;&lt;img alt="element14 presents" src="/e14/assets/legacy/2018/e14PresentsJune818.png" width="180px" /&gt;&lt;/a&gt;&lt;/div&gt;
&lt;div style="display:inline-block;vertical-align:top;width:70%;"&gt;&lt;span style="font-size:18px;font-weight:bold;"&gt;&amp;nbsp;&lt;/span&gt;
&lt;p style="margin:0;"&gt;&lt;span&gt;&lt;a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/"&gt;element14 presents&lt;/a&gt;&lt;/span&gt;&amp;nbsp; &lt;strong&gt;|&lt;/strong&gt;&amp;nbsp; &lt;span style="padding-right:5px;"&gt;&lt;a class="jive-link-wiki-small" href="/challenges-projects/element14-presents/vcp-program/w/documents/3718/vcp-biography-airbornesurfer---matt-eargle"&gt;About Matt&lt;/a&gt;&amp;nbsp;&lt;/span&gt;&lt;strong&gt;|&lt;/strong&gt;&amp;nbsp; &lt;a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/project-videos/"&gt;Project Videos&lt;/a&gt;&lt;/p&gt;
&lt;/div&gt;
&lt;/div&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;
</description></item></channel></rss>