MF Drive by MOOG.

Greetings

This is my first post, but I follow the forum for a long time and the information contained here was already very useful for me.

Today I'm asking for help.
I'm having trouble repairing my MAXON DUE-400. It has a compressor, distortion, Chorus / Flanger and Delay effects.

The distortion and compressor effects are work great, but the Chorus / Flanger and Delay does not work. At the exit I have only the signal dry, not the wet signal. I checked the switching stage and everything...

So I got a Monoprice Blues Overdrive pedal the other day, because it was on sale for $20 shipped. It's a rebranded Aroma ABS-1. Based on the name and color, I expected it to be a Boss Blues Driver clone, especially because there are other Chinese BD-2 clones out there. But I opened it up, and it doesn't look BD-2 related at all.
First of all, the gain, tone and volume pots are C250K, B25K and A50K, respectively, which don't line up to any pedal I could find online. It has one op-amp (JRC2068)...

I really enjoy the sound of the hot mode, however I would like to reduce the gain. The volume control is turned down a lot and it's too sensitive /hard to control.... Is it possible to keep the hot mode sound and lower the gain, so the volume control has a less touchy action?

Greenhouse MiddleMan Boost for reference and entertainment only.

Hello!

I would like to seek some help on dating these wah circuits
Would you know which one is the earlist and the latest?

Also why some bottom plate has CE number below the plate

And some does not have

Also, I see REV2 Rev3 RevB, do you guys have an idea what are these revisions?
I have been emailing VOX about this but I did not receive any replies

What's inside Hotone, Vow Press Switchable Volume / Wah.

Nice sounding, particularly at slower speeds - surely an MXR clone

1975 EXEL Shatterbox Fuzz Boost Effects Pedal by Barnes & Mullins (B&M)

1975 Barnes & Mullins (B&M) EXEL Shatterbox fuzz and boost pedal. Quite rare, this second generation EXEL Shatterbox, not to be confused with the John Hornby Skewes version, is an absolutely incredible overdrive pedal. It sports a matched duet of high-gain BC171 silicon transistors.

I own an Ibanez FLL Flanger and was wondering if it is analog or not? I really like the look of the FL-9 but if it produces the same analog tone and sound, i dont think its worth on buying a reissue.

Please advice.

Zoom MS-50G digital stomp, just for info.

As any one any information on the Voyager overdrive?

I like this unit.....but no chem around
any help with schem....whai BBD is inside?

boris

Tham posted the schematic, and I volunteered to do a vero. Haven't built it, but the back trace is good. At your own risk, so check it before you go for it. Here you go;

It's bigger than it needs to be, but I kept the clickless switching.

What do you guys think? Straight GT-2 ripoff?

Yes folks... it's here. I think this one stands right up there with the Ludwig Phase II, and I believe collectively, as with the Ludwig, we can break it.

Here is what I have so far. UKToecutter has taken charge of doing the schematic, maybe a clone PCB as well. I'll be more than happy to do the back tracing, verification, and answer all pertinent questions. I'm hoping the as the schematic develops our house brainiacs will be able to decipher the unknown IC's.

The component and trace picture...

taking the first steps in reversing this sucker, maybe someone else might want to do some leg work on this
main IC is SN74HCU04N cmos inverter
more info to come ...

This exciter-type pedal by Dod, one of their Performer series
of the early 1980s, looks very versatile and worth building.

It has an additional Enhance control in addition to the Presence
control, unlike the later FX85 Harmonic Enhancer which had only
a Presence control.

I enquired from Dod, but they do not have the circuit diagram.

Note that this series requires two 9-volt batteries, or an 18-volt supply.

File uploaded!

Hello
I'm finding my ideal distortion pedal.
I recently built Wampler Pinnacle (a great power in the box, although a bit noisy) and JHS Andy Timmons (not an amp in the box, but the dense overdrive).
But more recently came across a pedal Emma Reezafratzitz, which intrigued me, I spent two days trying to build it and all the while faced with one of two problems
1) or very little distortion
2) or a high level of distortion, but there oscillation
My question is - does it make sense to continue to...