Boss OD-3 Subclone?

[Arn C.]

Has anyone built this with success?   I can't seem to find any problems with my circuit board, yet I get no sound.

http://img392.imageshack.us/img392/4491/od3subclonebl3.jpg


Arn C.

[nordine]

breadboarded that thing once

sounded cool, nice tubey overdrive... however lacking lots of lows, because it has no tone shaping stage, so i dropped it

[Arn C.]

Thanks Nordine!  I will look at it once again.

Arn C.

[earthtonesaudio]

Wow... gotta love that discrete op-amp front end.   

[WGTP]

A lot of the circuitry in the OD-3, besides the distortion sections, seems to be EQ filtering.  I was just thinking of trying it again.  Also check out the Boss BD-2 for a dual discrete op amp pedal.   

http://www.freeinfosociety.com/media/images/676.gif

[Arn C.]

WGTP  ,  did you build this yourself?  Did it work for you?

Arn C.

[WGTP]

I have built the second stage of the distortion for sure, but don't remember if I built the first stage or not.  Seems I had a shortage of good Jfets.  It could bias differently with different transistors.  Check out the ROD10.  It is full of discrete op amps and uses different bias values. 

http://www.aronnelson.com/gallery/main.php/v/KHE/Boss_ROD10_Schematic.jpg.html?g2_imageViewsIndex=1

You might check out the original and see if I messed something up when I sliced the distortions sections out.

http://www.freeinfosociety.com/media/images/1893.gif

[sevenisthenumber]

Has anyone built this with success?   I can't seem to find any problems with my circuit board, yet I get no sound.

http://img392.imageshack.us/img392/4491/od3subclonebl3.jpg


Arn C.

Is this an exact clone of the OD3 without the buffer and bypass?

[WGTP]

IIRC it is.  As close and simple as I could get.  It may require some bias adjustments with the different transistors.  Notice the notch filter between stages.  Several things could be modified for more bass.