Preamp gain question


I am unable to turn up my CJ PV 10 pre amp up past 9 o"clock. Could the gain be lowered by using different tubes? I have considered using rca attenuators which are advertised to take it down by 10db but I am not sure if this is the way to go.
Also, I am using a Goldring 1042 mm cart (6.5mV output) Would going to a lo mc cart allow me to utilize more of the preamp gain control?

I guess I am trying to find out where my mismatch is occuring.

Everything sounds great but I have no control over low volumes.
zenblaster

Showing 1 response by photon46

Your Bryston 4b has 30 db. of gain and your PV10 has 80 db. of total gain when you factor in the 48.5 db. of the phono stage. The amp/preamp gain interface is out of whack. Mismatches of preamp/amp gain are common, but this one is pretty extreme. Your phono cartridge also has very high output. The easiest way to deal with it is to use a set of the Rothmann 10 db. attenuators. I hear absolutely no sonic compromise using them. You could also have the preamp modified, at a much greater cost. If you carefully selected a lower voltage output cartridge, you could use more of the volume control. It probably would not require so drastic a gain reduction as going to a low output moving coil. Are you content with the volume control's range when using your cd player?