Tube Amps / Music Electronics
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|previous: Charles From what we talked about earlier J... -- 12/29/1998 10:35 PM||View Thread|
|12/29/1998 11:10 PM|
|Jerry J||Re: Bias help???|
Thanks for the reply.
I pulled a leg of the 2.2k resistor and subbed in a 50k pot. I started at 2.2k and slowly increased the value up to 48.7k value of the pot and there was no change in the bias current. I then went the other way and again no change. I'm totally baffled on this.
Bruce this is a '63 Silvertone Model 1485, 100 watter. It does have two output transformers, one for each pair of tubes. The schematic is basically the same as the one in Gerrie Weber's book for the model 1484.
Thanks for any suggestions. Jerry
Charles You need something more like a 5k p... -- 12/30/1998 6:31 PM