ampage
Tube Amps / Music Electronics
For current discussions, please visit Music Electronics Forum.

ampage archive

Vintage threads from the first ten years

Search for:  Mode:  

 

Help with Dr. Quack

7/9/2000 5:20 AM
Larry
Help with Dr. Quack
Howdy,  
 
I just built a Dr. Quack, and much to my suprise it worked on the first try. Since this is by far the most complex circuit I've built, I was quite proud. Until I flipped the "bass" switch, and the other channel only produced very little, although properly effected, sound. (Oh, it's the "bass" setting that works ok, and the "norm" that has the problem.)  
 
I've tried my usual jumpering and audio probe debugging, and this is all that I can discover:  
Right at the switch, I have full volume, non-effected output. The last section of resistors and caps, individually jumpered, loses almost all the volume. I'm stumped, to put it mildly.  
 
Any ideas would be MOST welcome,  
 
Thanks in advance,  
Larry