Metropoulos Forum

I just changed to the 400V tap on my 2203 build. But, I'm looking for 41mA and I can't get above 12mA.

I'm thinking I need to change the bias range resistor(47K)? Or, the bias feed resistor(27K)?

I tried the amp and it sounds good, but I don't want to run it this cold.

Try a 33k bias range resistor, that should get you in the ballpark.

Thanks Fritz. That exactly what I did.