Hello

I have been looking for a schematic for the ADA MP1 channel pedal, but no luck. This is the tube pedal. I looked at the VAULT ( and contacted MarshallJMP who sells parts for the old ADA devices.

I also looked to purchase one the pedals, but I do not see them for sale.

Please let me know if you have a schematic you could share, or maybe someone that has one and would be willing to take pictures.

Thanks
Rob

Sorry to :beatdeadhorse: , but I love Zonk machines! No one likes the sound of the Zonk II (including myself, until now). To me it sounded dark and had a weird abrupt cutoff about the notes...especially lower power chords and the higher single note runs. I attributed this to just being a crap circuit, but after adjusting the bias I changed my mind. I replaced the q2 collector resistor (10k) with a pot (as close to 10k as you have.) I used an audio pot, but a linear would probably work better. I...

I've never heard of this one before and can't find any info... anyone know anything ?
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Hi all,

here is the BC108 Fuzz Face from 1969-70 Hendrix era.

Anyway I've got ready to transfer PCB and schematic, but the size of the PCB it self is a problem. I've checked the size of the image in photoshop, and it says its width: 17,5cm, height: 10,83cm; which is not true. So if anyone got the size of the PCB itself would be really grateful!

Nicked the photos from an Ebay auction.

Found this on the web: (About half down the page)

Anyone know anything about the Aria Super Fuzz Sustainer RE-203?

from ebay:

came across this on ebay, some crazy old fuzz from Japan.
seller didn't give much info except that it was from the 70s.
maybe some kind of silicon YAFF circuit?

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I thought this might be of interest. It's a kind of modulated doubling delay.
This particular unit is quite distressed. I've traced it to help debug it.
Switching and power are not shown. It has it's own plug, and i couldn't be bothered to follow the wires around a transformer and bridge rectifier etc. There's a couple of regulators for +15V and -12V.
I'm not very experienced with this stuff, so please take it all with a grain of salt.

It seems like a previous owner tried some...

Hi, I have a problem with my Bell ADT, is a kind of Phase Shifter and the overall modulation is distorted and noisy.

No way to find out any schematics for this Box!

i629.photobucket.com/albums/uu13/DogCake24/Bell%20ADT/ADT1c.jpg
i629.photobucket.com/albums/uu13/DogCake24/Bell%20ADT/ADT7b.jpg

(having a bit of trouble embedding the images :hmmm: )

seems to be rare, can't find much info about it...
I got this from a music shop cellar clean out, it's had a bit of schorching and smoke damage to the outer shell, although the plastic knobs and marshall type jacks are not melted :D.
if anyone is interested I can add the component values to the image.

One of the coolest pedals ever made is the Bigsby Volume/Tone:

Heavy.... undestroyable... you can even use it as a weapon when a bootweaker should try to steal your intelectual property.

What can´t be seen on the photos is that you cannot only move the pedal up and down, you can also move it left and right.... Think about putting a Wah-electronic inside.... plus an additional panorama-electronics (left/right).... Hey.... THIS wil be footwork, Jimiboy will look like a nobody beside...

And a four year older version (1961) of the echorec 2

Hi guys,
my english is bad so I bounce presentation and my sentences will be short and some time these last could be strange.. I beg your pardon for this...
I have a echorec binson e4t (I attach the schematic). If I increase length (feedback) I have only max 4/5 repeat even if I put on max the internal trimmer.
how can I try to edit in the feedback circuit for add the number of repeat?
thank you and excuse me for errors and ignorance
Luca