My tube amp is very quiet

[NewWave]

Re: My tube amp is very quiet

Tubes are 3 years old but I just started using this amp again I used another amp before. So I never really played this amp for say 2 years

[Kamanda~SD]

Re: My tube amp is very quiet

Sounds about right....swap em out and see.

[Lake Placid Blues]

Re: My tube amp is very quiet

I don't know why I didn't think of this before, but I had an amp that was this way after I replaced all the electrolytics in it. The problem was the bias voltage being way out of wack. There was so much negative voltage on the grids that very little current could flow. If I jumpered from one of the new caps (in the bias circuit) to ground the amp was very loud. What the exact problem was, was actually a resistor gone bad. I guess with old worn out caps it didn't matter but with new caps in there the open resistor couldn't regulate the voltage properly or something.

Have a tech check go through and test all the voltages on the pins throughout the amp.