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

ampage archive

Vintage threads from the first ten years

previous: lion Cathode follower drive to output tubes -- 1/10/2000 4:19 PM

just play quieter

1/12/2000 3:14 PM
Stephen Conner	just play quieter Hi Lion, I built a very similar amp to yours and noticed the exact same problem. The humps at the zero crossing are caused by grid blocking, and adding a cathode follower would cure this. I never did this though, I was worried about overheating the power tube grids. I just play a bit quieter. I couldn't get mine to sound right without feedback, and in the end I added some. If you are interested in a schematic, Ken Gilbert uses cathode followers in his 600 watt Big Ass Guitar Amplifier. C ya Steve.

1/12/2000 3:14 PM

Stephen Conner

just play quieter

Hi Lion,

I built a very similar amp to yours and noticed the exact same problem. The humps at the zero crossing are caused by grid blocking, and adding a cathode follower would cure this. I never did this though, I was worried about overheating the power tube grids. I just play a bit quieter. I couldn't get mine to sound right without feedback, and in the end I added some.

If you are interested in a schematic, Ken Gilbert uses cathode followers in his 600 watt Big Ass Guitar Amplifier.

C ya

Steve.