Don't post in this forum asking is there is a schematic or layout or info on XXX pedal.
There is a subforum setup for requests already. It is located here:
REQUESTS FORUM
Any requests posted here will be moved to proper sub forum, and I'll also make nasty remarks about your mother. :mrgreen:
also, if you have a problem with your build, post it in the WORKBENCH. these threads are for circuit analysis only. by all means, if you discover something we should...
I'm back to Exar pedals tracing, I was a bit busy during the last weeks, and it took me almost a month to finish HM-02 Heavy Metal tracing. According to the pots and warranty card dates, the unit I have seems to be produced and sold in 1999.
It was challenging to trace because of a lot of wiring with resistors in heat sinks attached to them. PCB itself is single-sided and transparent in light.
I traced this one a few months ago and never got around to putting the schematic up here. The only thing that bothers me is how the 9v supply is hooked up to the cathode of the bypass LED. I still have the box but the owner is not willing to desolder the caps to find the values. Any way to measure them in circuit to get a rough idea of what the are? In my experience NP0/C0G caps are usually lighter in color....like a grey and the X7R caps are a darker brown so that's how I marked them on the...
Does anyone know what Pro Co has done to the RAT to make it a FATRAT? I'm talking actual circuit and/or component changes not sound/features. If anyone has any gut shots or an actual verified/traced schematic that would be great. I'd like to update my comparative multi RAT schematic (below) to include this new RAT variation so I'm really curious as to what they've done.
Hi, I'm putting together a Troglodyte fuzz from the layout on dirtboxlayouts.blogspot and just wondered how critical the choice of NPNs are for Q1 and Q2. I've got a couple of low hfe (≈150) and just figured I'd throw them in there and see.
Hey lovers of the deep tone,
attached you can find my attempt to trace this big tank.
It's my second attempt to trace a pedal so please be kind. I used a continuity tester and the magnifying glass app with the flashlight of my cell phone to get it done. The schematic is made with Kicad.
Unfortunately I don't have a lot of knowledge in electronics. I don't now exactly which component is part of a feedback loop and which is a high pass etc or (and) especially for this pedal which component is...
below some line6 M9 gutshots. I need to opened it to replace a bad LCD and took some pictures.
The M9 schematic is attached as well.
Maybe it help somebody.
There are several schematics that come up when you go looking for Yamaha NE-1 , and they have different ways of showing the dual pots orientation & it's a bit confusing for anyone new to these things. I wrote to Silentfly the first time I looked at this project years ago and his is a mistake in the schematic , and I think the wiring in the drawing of the pots in the Paul-in-the-lab schematic is at odds with the Freestompboxes one and possibly wrong. I know it's a simple thing to just try wiring...
Gut shots of Rocktek's Super Delay.
All the parts are identified but I have no time to draw the schematics at the moment.
Some traces are burned (due to inadequate power supply I guess). Someone fixed that with some jumpers (two orange wires). You may also notice that the black wire for the battery snap is on the hole marked with (+) on the PCB, and the red is on (-). But that's OK, the wires are reversed at the battery snap too, so everything is wired properly....
It is not a stompbox (or an effect?) but I hope you will find it interesting.
I started to draw the schematics but it is too complex for my old brain.
u5_front.jpg
u5_back.jpg
u5_back_front.jpg
The 3 sets of 2 transistors on the left and on above the input jack are BD139 and BD140. The transistors in power section are TIP31GC and TIP31GC. The ICs are LF412CN.
Hello FreeStompers. I recently unearthed a file folder of Clockworks documentation and am pleased to be able to publish the info here for your entertainment. From the file notes it looks like I had the original concept idea in 1977, but didn't get around to actually building anything until late 1980. My first attempt apparently involved non-retriggerable one-shots but that was less than satisfactory and was abandoned in favor of the analog frequency divider approach that ultimately went into...
Hi,
I'm repairing at the moment a DOD 670 flanger that has what seems to be a shot SAD512D delay chip.
My pedal has a 110V power input, as I live in Europe and while I'm waiting to solve the current SAD512D situation I'm thinking in replacing the original small 110V primary power transformer for a 230V transformer so I don't need a mains voltage converter.
Just to let you know, theres versions of this pedal where the power transformer has 110V and 220V volts taps on the primary (the available...
I'm building a Prince of Tone for my Pedalboard but I found 2 different schematics: Aion's one and PedalPCB's one.
In addition of the different value of the input capacitor, the difference between the two schemes is in the clipping section.
Which one is correct? Or simply are different revision of the same pedal?
Another Caline overdrive. They're so cheap, I see it I buy it. With this pedal they heavily allude to it being Dumble inspired, and there are a lot of Dumble in a box pedals it could be based on.
Caline came out with e Big Muff clone too, the B-Fuzz , but I haven't bothered to open that up because I can tell you right now it sounds identical to my Nano Muff. What miniscule difference exists could owe to component tolerances.
I got one of these cause they seemed cool. It sounded alright when I played it so I ended up tracing it to see what was going on under the hood. Going off the other pedals by this brand I'm pretty sure its a clone, not sure exactly what it's a clone of but there are some familiar elements. A TS style soft clipper with switchable asymmetry into a two-band Baxandall followed by a JFET buffer. (Yes, I know there's a gate resistor 'missing' from the buffer, it is not a tracing mistake, and the...
I got one in with a broken delay knob. Pics are on my instagram page (see sig)
I only traced the schematic that I found interesting.
- The Delay part is a copy of the Danelectro Dan-Echo with a PT2395 IC w/ some mods
- The Chorus part is a copy of the Ibanez SC10 pedal w/ some mods
I've had this compressor for a while but put off tracing it more than once because it's a pain to trace a fully assembled, white solder mask PCB. But I made it in the end!
The main reason for me was getting into the design, calculate its parametersand maybe customize it with the help of the great documentation on the THAT website. It's a solid design and I like it even more that I know that. Sometimes I think a schematic is the best advertising for a strange customer like me, and this is one of...
Hey everyone, I found pdfs of most of the Moogerfooger factory schematics and it doesn't seem like we've looked over them here. Anyone able to confirm they're accurate? I'm not skilled enough to do it myself yet (except for the CP-251, that one is way simpler than the rest).
I love how these pedals sound, but insanely expensive these days, especially the amazing MF-104 delay. Hopefully we can figure out how to clone them and find replacement parts, especially for the ones that need BBD chips....
Hi, got a pressure tank, took it apart and got some pics :3. It's actually very close to the diamond comp minus the tone bypass, even down to the double coupling caps which is kinda pointless in this mlcc version but still cute. Our unit's frequency response is not very flat, especially at higher comp settings, which is no surprise with the LM358 (0.6uV/s slew) that works as the makeup gain amplifier (U1) in this unit. We swapped it for a TL072, and while the bandwidth still feels limited at...
I haven't seen this one here already, so I gave it a trace both for personal fun and curiosity:
bassmuff.png
Some values aren't there because they weren't marked on the silkscreen like the others, and I'm not going to pull them out to check. You get the gist of it though: they basically doubled up most caps with another one in parallel. The tone stack is a flatter variant. The bass boost literally mixes some lowpassed signal with the tone stack output. The parallel dry blend is done in a...
Hey, I need to synchronize my looper to perform a couple of our band's songs live but all production solutions are too exprensive and give me too many options I don't need (currently). We don't use computers or synths I only need to sync drummer's metronome and my looper. We tried with the drummer having me on headphones but my loops often don't have pronounced rhythm and I easily overwhelm them (and I could get very noisy :lol: ).
First idea is to send click from looper's rhythm machine to...
Another Exar pedal trace, Exar SF-02 Super Fuzz. I was lucky to have a friend in Austria who helped to get this one for a reasonable price. The unit seems to be produced in 1997 or later, as the latest date on the potentiometer was '97.
PXL_20221227_125404729.jpeg
PCB is standard for series 2 Exars - single-sided, visible in the light.
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