Death by Audio - Apocalypse

General documentation, gut shot, schematic links, ongoing circuit tracing, deep thoughts ... all about boutique stompboxes.

Re: Death by Audio - Apocalypse

Postby Wiseblood » 15 Feb 2017, 00:50

Posts: 5
Joined: 23 Dec 2013, 16:16
Has thanked: 56 times
Have thanks: 0 time

Re: Death by Audio - Apocalypse

Postby Cannibal » 16 Feb 2017, 15:17

My bad!!

There was a mistake and the pedal seemed to work properly due to the ultra-heavy amount of gain.
I corrected a couple issues and now it works. Treat the SCOOP transistor (NPN MPSA06) like a PNP - that means collector to GND.
Squarewave section TL072 has pin 3 and 5 connected to Vref.

Check the correct files below.

Also try different configurations on the pins of B100K (equalization) - depending on how you wire 1 and 3 it could act as a frequency cutter or the original EQ.
Maybe try A100K for a better control.
You do not have the required permissions to view the files attached to this post.
Seiche wrote:there's a difference between being drugged (I don't think it was only booze) and retarded.
User avatar
Breadboard Brother
Posts: 76
Joined: 24 Jul 2010, 13:53
Location: Milan, Italy
Has thanked: 31 times
Have thanks: 13 times

Re: Death by Audio - Apocalypse

Postby johnk » Yesterday, 20:12

i drew up my own PCB layout for it using the posted schematic and built & tested it, but i think that it has some errors. the tone control doesn't work like the sample videos and two of the positions on the rotary have VERY LOW output so, IMO, this one isn't quite solved yet.
Solder Soldier
Posts: 231
Joined: 05 Apr 2010, 08:33
Has thanked: 28 times
Have thanks: 213 times


Return to Boutique Stompboxes dissected...

Who is online

Users browsing this forum: Gonzotheweirdo, WangoFett and 14 guests