I just salvaged this little jewel from an Aiwa AV-X120 Stereo Receiver, that sorta got crushed. The receiver I had found at the Goodwill for 5 bucks. What I wanted were the transformer and monolithic power amplifiers. Along the way, the volume control got tossed in the to-be-saved tub. Now a few months later, I uncovered it again and the light went on. Now I need to do my homework before I can use this in NexGen's RSS-IOP audio controls (it will be buried in one of the boxes). This has 4 audio channels. It has 2 ICs on the PCB MVR501.
- BA384LF Preset Equalizer Sound Control (this one is neat!)
- NJM4558 Dual Operational Amplifier
Also, they used two (2) transistors (CSD655, 2SA952) per side to drive the motor's H-bridge. This could be replaced by an H-Bridge Sheild.
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| image 1 Motorized Potentiometer | image 1 Potentiometer Pin Outs | image 3 Sideview Demenssions | image 4 Specifications p1 |
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| image 5 Specifications p2 | image 6 X-Ray rear | image 7 Control PCB Schematic | image 8 Motor H-Bridge Driver Schematic |
Cris H. 
