Search found 27 matches

by jsrfo
15 Feb 2023, 14:14
Forum: Vintage Stompbox Corner ( ... - 1975)
Topic: Electra MPC Module Schematics [schematic]
Replies: 25
Views: 13529

Re: Electra MPC Module Schematics [schematic]

because i love you handsome dawgs n beetchez.... enjoy.... here's all the schematics for the electra plug in effect modules... stolen off a facebook group. i'd like to say personally FUCK MARK ZUCKERBERG . he's a reptilian weeny that sucks on octopus assholes. this is the most worthwhile shit i eve...
by jsrfo
15 Feb 2023, 14:04
Forum: DIY Projects
Topic: Foxx Tone Machine Octave issues.
Replies: 5
Views: 869

Re: Foxx Tone Machine Octave issues.

Thanks! I'll socket some transistors and do some experimenting! I appreciate the input.
by jsrfo
05 Feb 2023, 16:49
Forum: Vintage Stompbox Corner ( ... - 1975)
Topic: Electra MPC Module Schematics [schematic]
Replies: 25
Views: 13529

Re: Electra MPC Module Schematics [schematic]

Here's a link to PJ and the Beard using my Electra Vibe/Chorus and my Electra Distortion builds!

by jsrfo
05 Feb 2023, 16:48
Forum: Vintage Stompbox Corner ( ... - 1975)
Topic: Electra MPC Module Schematics [schematic]
Replies: 25
Views: 13529

Re: Electra MPC Module Schematics [schematic]

Hey guys, I'm working on attempting to rebuild the Electra Filter follower, and am having difficulty with the CA3094 with respect to the schematics.

Anyone helping with understanding that part, I'd appreciate it.
by jsrfo
05 Feb 2023, 16:32
Forum: DIY Projects
Topic: Foxx Tone Machine Octave issues.
Replies: 5
Views: 869

Foxx Tone Machine Octave issues.

Just built a Foxx Tone Machine, and am having issues with the octave up being too harsh. It's basically useless other than single note playing The normal fuzz sounds nice. This build uses 3904 transistors and 1N34A Ge diodes. Any suggestions on Q voltages, proper Q hFe, etc, would be appreciated. Th...
by jsrfo
16 Sep 2021, 17:06
Forum: Vintage Stompbox Corner ( ... - 1975)
Topic: Electra MPC Module Schematics [schematic]
Replies: 25
Views: 13529

Re: Electra MPC Module Schematics [schematic]

This is my custom overdrive module for the MPC guitars. The circuit is my own, and I designed the printed circuit edge card. I also print my own module cases. https://scontent.fagc1-1.fna.fbcdn.net/v/t39.30808-6/s960x960/234214229_348152746862990_6274470839256072563_n.jpg?_nc_cat=102&ccb=1-5&...
by jsrfo
16 Sep 2021, 15:15
Forum: Vintage Stompbox Corner ( ... - 1975)
Topic: Electra MPC Module Schematics [schematic]
Replies: 25
Views: 13529

Re: Electra MPC Module Schematics [schematic]

I've build the "Electra Distortion" circuit schematic above into a module card. It's the one with the output pot.

Is there a back shot of the photo with the three transistors on it? Do you know what that one is?
by jsrfo
12 Jan 2020, 22:24
Forum: Vintage Stompbox Corner ( ... - 1975)
Topic: Electra MPC Module Schematics [schematic]
Replies: 25
Views: 13529

Re: Electra MPC Module Schematics [schematic]

So, I am in the process of obtaining 3D printed cases for module boards. Wish I knew how to embed a picture, but they're basically the same size as the originals, only dark grey. I have my own overdrive, sold as a pedal called the El Mo, built into a card, and it works pretty nicely. Three trim pots...
by jsrfo
21 Dec 2019, 04:27
Forum: Vintage Stompbox Corner ( ... - 1975)
Topic: Electra MPC Module Schematics [schematic]
Replies: 25
Views: 13529

Re: Electra MPC Module Schematics [schematic]

I have just designed replacement PCB's for the Power Overdrive and the Dynamic Fuzz, and they work. So, now I need to figure out module boxes for these. Made one of each, and they work just fine. I intend to do a different overdrive as well, as I started out with those two original, simple circuits....
by jsrfo
09 Nov 2019, 13:37
Forum: Vintage Stompbox Corner ( ... - 1975)
Topic: Electra MPC Module Schematics [schematic]
Replies: 25
Views: 13529

Electra MPC Module Schematics [schematic]

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...
by jsrfo
17 Jul 2018, 00:52
Forum: Stuff Seen for Sale
Topic: Replacement Vibe Circuit Boards
Replies: 0
Views: 6403

Replacement Vibe Circuit Boards

Replacement printed circuit boards for use in Uni-Vibe effect with damaged/de-laminated original boards. These printed circuit boards are modern replacements, and can be used as an alternative to hand etching a replacement board. They are not meant to replicate the look of the original hand etched b...
by jsrfo
30 Jul 2013, 13:59
Forum: Boutique Stompboxes dissected...
Topic: Jack DeVille Deuce Coupe [traced]
Replies: 21
Views: 9641

Re: Jack DeVille Deuce Coupe [traced]

Can anyone tell me what P$1 and P$6 represent? Also, I do not see the Takamisawa relay on the schematic. Any help would be great.
by jsrfo
04 May 2011, 23:19
Forum: Lords of the Boards - Vero, Perf, PCB or Point-to-Point
Topic: Where can I get PCB's made????
Replies: 22
Views: 26982

Re: Where can I get PCB's made????

OK, can't find any freeware out there that converts Express PCB to something Eagle can use, gerbers, etc. Anyone out there know of any software or anyone that converts for a fee? Laen cannot use Express PCB files. Crap...
by jsrfo
30 Apr 2011, 10:43
Forum: Parts & Tools Sourcing & Trading
Topic: Group Buy - Davies Clear Knobs ?
Replies: 141
Views: 31931

Re: Group Buy - Davies Clear Knobs ?

I would not mind buying 10 or 15. Let me know the particulars.

Thanks
by jsrfo
22 Apr 2011, 20:33
Forum: Lords of the Boards - Vero, Perf, PCB or Point-to-Point
Topic: Where can I get PCB's made????
Replies: 22
Views: 26982

Re: Where can I get PCB's made????

Yeah, I know. I attempted Eagle, and have it on the computer. But for me, certain types of software aren't intuitive. Eagle reminds me of AutoCad, and I have a hell of a time drawing a line with that type of software. I really will need to learn a more mainstream software, for sure. Does anyone have...
by jsrfo
22 Apr 2011, 04:02
Forum: Lords of the Boards - Vero, Perf, PCB or Point-to-Point
Topic: Where can I get PCB's made????
Replies: 22
Views: 26982

Where can I get PCB's made????

I've designed a dual layer PCB for a project and would like to know where someone can get printed circuit boards done at reasonable costs. I used a program called Express PCB, and although they have a board service, four boards are $175.00, which is kind of steep for something I don't really know th...
by jsrfo
06 May 2010, 12:32
Forum: Boutique Stompboxes dissected...
Topic: Xotic EP-Booster [traced]
Replies: 172
Views: 177419

Re: Xotic EP-Booster [traced]

I hand wired mine on a generic PCB from radioshack. It originally did the same thing as yours. I had a couple issues. I found a couple cold solder joints and also a grounding issue where the board was grounding out against the case. Fixed those up and it really is a nice box now. Probably my favorit...
by jsrfo
22 Apr 2010, 18:10
Forum: DIY Projects
Topic: Echoplex 3 preamp
Replies: 19
Views: 5912

Re: Xotic EP-Booster

Are you sure that the Fatpants is the same circuit? It looks completely different than the circuits and part values that Elrengofa, Theo, or Moska have posted here. There are a million ways to skin the cat, so to speak, so it may be an equivalent circuit, but I didn't look that deep into it. I used ...
by jsrfo
22 Apr 2010, 14:44
Forum: Boutique Stompboxes dissected...
Topic: Xotic EP-Booster [traced]
Replies: 172
Views: 177419

Re: Xotic EP-Booster [traced]

I'm wondering if anyone who has made a board for the EP Booster has any for sale. I built one on a generic PCB, and it works great. Well, actually the second one worked great. I'd like to do another one on a good PCB, but don't have the knowledge or equipment to do one. It's one great littel box for...
by jsrfo
13 Apr 2010, 17:10
Forum: Boutique Stompboxes dissected...
Topic: Xotic EP-Booster [traced]
Replies: 172
Views: 177419

Re: Xotic EP-Booster [traced]

Thanks for your help. I got it pretty much all sorted out. Basically I had some of the wiring ass backwards on the battery/DC jack, and two solder joints were found broken on the board. No pop, no hiss. Just waiting for the 10KC pot. The booster works really nicely, otherwise. I find that it is on m...