Had one today under my hands...... nice little box that could deliver nice sounds :)

Discofreq entry

Schematic

Quite similar to the Boss HM-2

Akai Overdrive with easy changeable op amp ic.

Tonebone London distortion guts.

Hi,
I want to build Dunlop JH-OC1 Jimi Hendrix Octavio . I want to get PCB from tonepad (Tychobrahe Octavia) and use this schematic: . Does it work?

:idea:

Yamaha OD-01 Over Drive.

Another one Fuzz Face clone by Foxrox - CC HYBRID. Schematic with some DC points.

I've searched high and low on here and I can't find an answer to my question... so here goes:

I decided to mod an BD-2 using Brian Wampler's old book on modding pedals. For the Brent Mason mod and others C10 is listed TWICE. :scratch:

As far as I can tell it's not C100 or C101, which are the HP/LP filters.

Any ideas?

I am trying to repair a pitch shifting rack unit from MXR, the model is M-129 pitch transposer

I am desperately trying to find the schematics

I am trying to tackle some weird distortion that is happening in the pitch shift section but I can't really operate without a schematic, all the ics have been sanded and the circuit is very complex with 2x dual sided boards

Anyone has the documentation for this one ? Also the calibration info would be great

Thanks

Need schematics? Contact me.

For the magazine I work for I ordered a couple of Moody Sounds kits. For the MusicMaker I reviewed and build a Muller Bass OD, for Bassplayer magazine I build and reviewed the Pratabas. As for this unit no schematic could be found on the website, I thought I shared it with you all!

The unit has 2 switches; one to turn the unit on / off, one to switch between the OD and the fuzz section. Both units are controlled by the same potmeters; the gain of the OD stage is controlled with a LED / LDR...

Hello,
I bought a cheap cheap Joyo Tremolo pedal.
It sounds good but i would like to make it more versatile.
For now on, sources are saying the Wave Form of the trem is Square Triangle. (something like this: )
So it let you ear a sweet tremolo.
But i would like to be able to obtain something more agressives, with more cutting edges like a Square wave ( )

I saw on youtube some videos (not really enough tutorial friendly for me to understand it all) where the guy is adding a potentiometer to...

I haven't yet fully traced the circuit, but I'm about 75% done and at this stage it is looking like it's a Boss CS-2 with a blend mod to mix the dry and compressed signal.

IC is LM13700N, FETs are J201 and transistors are 2N3904.

One of the best overdrive pedals I have ever used for my taste is the Tube Factor of Hughes & Kettner. It is found on numerous pedalboards.
But the owers of the pedal know, it has to be more versatile. To fix this, I would like to describe a few sensible modifications (sorry for my poor english):

Mod Part 1 (Gain Mod): Factor 1, who delivers too little gain, the gain mod with a mini switch provides flexible settings.

Mod Part 2 (Volume 2 Mod): A known shortcoming, however, is the common...

Fire Blade serie by Maxon.
And schematiс ))

Hello guys!

I have an issue with my Ibanez PT9, it supposed that the integrated are not working anymore and I need to replace all of them.

The number/serial of the chip is 3403AD JRC 3021.

I found this on eBay, but I don't know if those are going to work. Do you have any idea related to this?

Thanks!!!

Hey guys,

Anyone know if it's possible to modify the Hotone Soul Press so the volume and wah mode are active at the same time? Also if anyone knows if the treadle can be tightened that'd be great.

Cheers

Hi all,

Last night I finished a modification on my EHX 8-step program CV sequencer. The unit offers no gate or clock output stock. Opening up the back reveals a clock out and ground solder holes next to each other.
EHX%20-%208-Step%20Program%20Pics%20009_zpswz22swfc.JPG

I originally connected the jack for the external Foot Controller* (*sold separately- it is labeled FC on the unit. It's the upper left jack in the above picture) directly to the clock out and gnd pins on the pcbs. This...

Only the guts:

I have a DOD FX50 Overdrive Preamp that I wanted to revive and convert to be relay bypassed. I've searched for the schematic but the only ones I found are either close but is slightly different, or, schematics for the FX50- B , which is significantly different. So, I decided to just trace pedal myself. I have my traced schematic, the pic of the front of the board with component numbers added, and the flipped pic of the trace side of the board. They're all in here in case it could be of use to...

I have some good gut shots of this chorus if anyone is interested with all components listed. However, I'm not sure how to post the images. Sorry, been watching this site for years and thought i would add my bit. Did post gutshots on Guitar FX layouts forum but no joy.
I have the components necessary to build and do my own PCBs so if anyone fancies doing a schematic/pcb trace once i have figured out how to upload pictures that would be cool.

I love this overdrive, simply because with the drive cranked, it turns into an incredible fuzz. However, the switch and bypass are questionable and the pedal is developing some quirks. Here's a write-up of the circuit that actually came in the box with the pedal, and I was wondering what out there is similar to this thing in design/sound. . .