Hello everyone, and thank you in advance for your responses.
I built my amp about a year ago (my first and only build). I am not a professional, but with the occasional phone call to my father (electrical engineer), I was able to get the thing running without killing myself.
Although the amp does sound better than my previous amp (Hot Rod Deville), it doesn't have that Fender AB763 black-face sound. Until now, I've just let it go, but the other day I played into a vintage super reverb, and it really showed me how different my amp's sound is from what it is supposed to be.
My amp doesn't make any noise, and has no audible indications that something is wrong. It just doesn't sound right, and it really kinda bums me out. The bass sounds muddy, and it doesn't have that classic "compression" sound of the back-face amps. I just replaced the tubes, and that didn't help much. When I check the bias, tube 2 is at 21.25 and tube 1 is at 19.73. Are they supposed to be that far off from each other? I get similar results when swapping the tube positions. Also, the plate voltage is 459. If I turn the bias pot all the way up, the most static dissipation I can get is 26.07. Theoretically, shouldn't I have the ability to go above the max dissipation of a 6L6 tube (not that I ever would)?
If anyone out there in amp building world can help me out, I'd really really appreciate it.
Thanks
I built my amp about a year ago (my first and only build). I am not a professional, but with the occasional phone call to my father (electrical engineer), I was able to get the thing running without killing myself.
Although the amp does sound better than my previous amp (Hot Rod Deville), it doesn't have that Fender AB763 black-face sound. Until now, I've just let it go, but the other day I played into a vintage super reverb, and it really showed me how different my amp's sound is from what it is supposed to be.
My amp doesn't make any noise, and has no audible indications that something is wrong. It just doesn't sound right, and it really kinda bums me out. The bass sounds muddy, and it doesn't have that classic "compression" sound of the back-face amps. I just replaced the tubes, and that didn't help much. When I check the bias, tube 2 is at 21.25 and tube 1 is at 19.73. Are they supposed to be that far off from each other? I get similar results when swapping the tube positions. Also, the plate voltage is 459. If I turn the bias pot all the way up, the most static dissipation I can get is 26.07. Theoretically, shouldn't I have the ability to go above the max dissipation of a 6L6 tube (not that I ever would)?
If anyone out there in amp building world can help me out, I'd really really appreciate it.
Thanks
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