Hardly what i'd call a Modern Stompbox but the Schematic dates it as 3 years out on '75.

Anyway, here's a Redraw of the Factory Schematic for those of you with poorer eyesight. I think the Redraw is Correct I can't recall where I got the original Factory one from and nor can I confirm its Authenticity so if someone knows the link to that or if it's correct, that'd be handy.

I might see about converting it to 9V & V3205s as it's quite a nice simple looking Delay Project.

The EH Mans Article...

Here's one of my Favorite Overdrives.
This circuit is a cousin of the Distortion + and it's rumored that the Distortion + is a variation of Dan Armstrong's Blue Clipper.

1977

Grey

The Grey version is from an official' DOD service manual from circa 1977/1978 that a fellow from diystumpboxes e-mailed me requesting a layout. I am unsure of it's accuracy but, he was happy!! :!:

***edit admin: here's schematic for basic reference***

I came across this thread on another forum and thought I'd mention it here for the sake of discussion.
The info is from Don Mare, pickup maker, musician.
Link to thread

The thread title is Closest Pickups to Jimmy Pages tele
don't fall in the tone Bender trap..

What was in a TB box was not at all a TB..
Jimmy liked that Tone Bender box best and emptied it out - then put the Rodger Mayer FZ-1 clone into the TB box himself - Jimmy did not really like the TB and was more used to older...

You gotta be kidding me...

A few years ago I posted the actual hfe of Q1-Q4 from a 1974 Rams Bead Big Muff with FS36999 transistors as measured using a Peak DCA55. They were: Q4: 163, Q3: 214, Q2: 171, Q1: 160.

Since that time I've worked on three more pre-1975 Rams Head Big muffs. Two had FS36999 trannys and one had 2N5133 trannys. Guess what...they all measured less than 200 hfe, lol. The one with 2N5133 trannys were as follows: Q4: 132, Q3: 117, Q2: 145, Q1: 128. I also noticed Kit Rae posted some of his own...

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...

Hello,

I've been searching for schematic for Carbon Copy on net, but I didn't find anything.
anyone have a schematic for this box? Does it exist..?

Wojtek.