Single input power amp

[crgolfer]

I only need one input and don't need a volume or balance control.  So I an thinking that I would only install one set of RCAs, leave out the input selector, balance and volume controls and then run the RCAs directly to lugs 8 10 and 11.  Since I am leaving out the 100K volume pot it looks like that I would then have to connect 100K resister across each RCA.

Is all this correct?

 

[Paul Birkeland]

That's the jist of it.  The balance control is still useful with zero feedback amps, as there can be some small channel imbalance. 

 

[crgolfer]

Thanks for confirming my thinking.  I am not concerned about some channel imbalance as I will be running it from my dac which has volume and balance controls.

Is 100K the right value for the resistors or should I go to 133K to account for the resistor in the existing balance circuit?

 

[Paul Birkeland]

Any resistor value between about 47K and 470K is going to do the job.  The stock volume pot/balance pot/resistors present something a bit more than 50K IIRC.

 

[crgolfer]

Ok, thanks.