So I opened up my Fender Super Twin conversion and saw the 820 still there, so I replaced it with a 3k2. I guess I never realized how quite it was because I use it for home recording. But WOW, it is loud now.ic-racer wrote:Gary thanks for your comments on the NFB resistor ratio. I have scanned my notes and schematics and I believe leaving the original 820 ohm resistor in there was an omission or error.
Since it is a big deal to take that chassis out of the cabinet, I was scanning my pictures of the finished amp to see if I had actually put a 4k7 in there and forgot to mention it anywhere. Either way, I'll be taking the chassis out to check it out. The amp is not very loud for a 180W amp, so I suspect the NFB loop is the issue.
dumble type presence on a fender
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