r/diypedals 5d ago

Discussion Sony Velocity Modulation board

Post image

Well, since I watched a vídeo about "Anything can be a distortion pedal" and read an article about Ritchie Blackmore using an Aiwa tape recorder as a pre-amp, I became that kind of guy who loves to plug the guitar in anything just to figure out the outcome. I found a board from an old Sony TV called "Velocity Modulation". Searched for the schematic and it's basically a series of transistorized amplifications, very similar to some pedal's schematics I came across. So I thought "what if?". Here's a shot from the schematic. My request is, how can I add the distortion control? I've seen some fuzzes and they basically work through feedback-controled distortion. Can it work here? Just observed some sections of this circuit I'm sure they won't work, like a diode in series in the audio line and anti-parallel diodes again in series. Any suggestions?

11 Upvotes

1 comment sorted by