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previous: Dave I built a D'lator type effects loop... -- 10/1/2000 8:44 PM View Thread

Re: effects loop hummmm

10/2/2000 4:17 PM
Gil Ayan
Re: effects loop hummmm
Q{I built a D'lator type effects loop into my D'clone. When the send pot is all the way up or all the way down, it's quiet, but anywhere in the middle and I get 60hz hum. Any suggestions? I put some shielded cable to and from the pots and no help whatsoever....Daved and confused....  
}  
 
What is your grounding scheme like, and did you decouple the power supply feeding this circuit? I can't heloe you specifically, since I didn't build FX loops like that into my amps. But I have two D-lator copy rack units; the first one I built would hum until I used isolated jacks on it. The second one never hummber, since I used isolated jacks right off the bat.  
 
I must confess that I had built, a while ago, a fully featured FX loop into a modified Fender and never had any problems with hum. Verify the grounding scheme, the power supply, the TUBE ITSELF, and all solder connections.  
 
Good luck,  
 
Gil

 
Replies:
Dave Thanks,Gil. The power supply is de... -- 10/3/2000 10:50 PM