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previous: Tom L 7/9/2000 5:18 PM

Re: Bias pot

7/9/2000 6:17 PM
Casey4s	Re: Bias pot I have a VT22 which is essentially ther same thing as a V4 but in a 2x12 combo. I wired my sockets to take EL34's and added a bias pot so I could switch tubes around without having to go thru a bunch of crap to make a change. All you need to do is remove the bias resistor, which is normally a 75K and replace it with something around 68K with a 25K linear pot in series. The resistor is the first one after the diode and is going to ground. A very simple thing to do, and well worth the trouble. Casey4s

7/9/2000 6:17 PM

Casey4s

Re: Bias pot

I have a VT22 which is essentially ther same thing as a V4 but in a 2x12 combo. I wired my sockets to take EL34's and added a bias pot so I could switch tubes around without having to go thru a bunch of crap to make a change.

All you need to do is remove the bias resistor, which is normally a 75K and replace it with something around 68K with a 25K linear pot in series. The resistor is the first one after the diode and is going to ground. A very simple thing to do, and well worth the trouble.

Casey4s

Replies:

danhei Thanks for all the advice so far! -- 7/9/2000 7:13 PM