inside sobbat drivebreaker 3 - gut pics

[dubs]

Joep, I checked over your schematic and found these errors:

- R8 (47k) missing on schematic.  Goes between Drive pot and opamp -ve input
- IC2 has parts A and B swapped from the PCB
- The wipers of the Drive and Boost pots actually connect together (they connect at the middle of that part of the ckt) Basically flip the Boost Pot Left Right.
-  I'm pretty sure the LEDs are 3mm orange.  I checked this on a DEL 19" LCD which usually has good colour rendering (the Yahoo girl looks nicer as well), still looks orange on my CRT.

As far as the guess cap values go.   There's enough ambiguity not to guess.  Only a few cap values are actually visible.  (I think R14 is 100k but it's a guess.)

From seeing it in person the LEDs are definitely 3mm RED.
I think R14
To me doesn't sound like a RAT at all, alot more of a medium gain overdrive like a TS but mo midrange hump. the tone knob seems to alter some midrange frequency as well. Be good to tweak this thing to get more gain out of it.
Anyone done a pcb layout yet? Might have a shot at it when I get some time, since Joep done a  .sch file. Man you guys don't muck around reverse engineering. great work!

[j0shua]

1 question  on the PCB Pics appears only 2 ic's 4558 and the schematics appears 4 ...where is the other 2?


sounds cool

[Peter Snowberg]

1 question  on the PCB Pics appears only 2 ic's 4558 and the schematics appears 4 ...where is the other 2?

Each of the chips has two opamps inside . Two dual opamps = 4 total.

[StephenGiles]

The samples for the phaser are a very poor demo of what seems to be a half decent sound. It would be better to just play long decaying chords so that the full extent of the sweep can be heard. Typical of some demonstrators trying to be hip! I pontificate.
Stephen

[tigermilk999]

http://www005.upp.so-net.ne.jp/guitarder/01-db2.html

The full copy of DB-2

[dubs]

Gee the guy did a complete clone impressive!

[Ghandi]

Now we need some gut shots of the db-1, don't we?!

[Ghandi]

dubs?

[BRingoC]

Is there any update on the DB-1 insides?

[jimbob]

Any layouts for the pcb?

[markm]

I'm a bit surprised at all the jumpers on the board.

[Mark Hammer]

Um, I hate to be a stick in the mud, and I am appreciative of the work that people have done, but doesn't this thread kind of fly in the face of the collective policy of not posting schematics of current production small manufacturer pedals?

I don't know who Sobbat is or are, but they should receive the same treatment as others.

[StephenGiles]

I agree, even if it is just another fuzz!