Electra MPC Module Schematics

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Electra MPC Module Schematics

Postby jsrfo » 09 Nov 2019, 14:37

Does anyone have schematics or traces of the old Electra Guitar MPC modules? Just picked up a nice MPC guitar, and would like to attempt to make a module board, but would like to first see the thought process behind them, as the guitar uses one 150K pot to control one parameter on the effect. Pretty simple, I'd assume.

Any help would be appreciated. I'd even buy a broken or functional module to work from.

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Re: Electra MPC Module Schematics

Postby Nocentelli » 10 Nov 2019, 17:56

Some superb (and possiblly trace-able) gutshots here:

http://www.rivercityamps.com/electra/modules.php
brownwhopping wrote:How can I learn by reading threads an making circuits, when some day I can see a lawsuit or somebody beat me in the face for that?

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Re: Electra MPC Module Schematics

Postby Axldeziak » 10 Nov 2019, 20:43

Looking through their forum it seems the phaser circuit was an original E-H Small Stone using CA3094 OTA.

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Re: Electra MPC Module Schematics

Postby jrod » 19 Nov 2019, 22:33

Nocentelli wrote:Some superb (and possiblly trace-able) gutshots here:

http://www.rivercityamps.com/electra/modules.php


The Overdrive looks to be basically the "Electra Distortion" schematic that's been floating around for years, but without the clipping diodes.

For the Dynamic Fuzz though the PCB trace side doesn't match up with the components.

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Re: Electra MPC Module Schematics

Postby Dr Tony Balls » Yesterday, 20:00

Dont have any schematics, per se, but I can chime in with some info. Awhile back a friend sent me two MPC modules in hopes that could get them working. The problem being that I dont have an MPC guitar to test them on. So I built a little pedal that could accept MPC cartridges for testing and use. Bought a 10 pin edge connector and just hooked it up outside a stompbox like so:

Image

One cart was a distortion unit that I got working. The other was a phase shifter that I couldnt get to the bottom of so instead I set out to build a replacement circuit. You could print a PCB for this if you want, but I found that 0.15" pitch vero board was a close enough match for the edge connector. You just have to cut it to size and cut/file shoulders by the connector. Wound up putting a Magnavibe circuit on one:

[url=https://flic.kr/p/Xg3mcR]Image

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