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

ampage archive

Vintage threads from the first ten years

Multiple output jacks and neg feedback

1/9/2000 5:48 PM
Don	Multiple output jacks and neg feedback I've noticed that Dr. Z uses a separate jack (they are not isolated) for each output impedence (4, 8, 16)on some of his amps, which made me think about how global negative feedback would be handled with this setup. I know the 66 is an UL amp, but what if there were three output jacks with a global feedback circuit. Which output tap should the feedback resistor be hooked to, or would there need to be one on each of the jacks? Thanks in advance, Don

1/9/2000 5:48 PM

Don

Multiple output jacks and neg feedback

I've noticed that Dr. Z uses a separate jack (they are not isolated) for each output impedence (4, 8, 16)on some of his amps, which made me think about how global negative feedback would be handled with this setup. I know the 66 is an UL amp, but what if there were three output jacks with a global feedback circuit. Which output tap should the feedback resistor be hooked to, or would there need to be one on each of the jacks?

Thanks in advance,

Don

Replies:

Bruce Not too much experience with Mike's... -- 1/9/2000 7:32 PM