Ideas for reducing gain on a Belles 21A pre-amp?


Using a Belles 21A pre-amp with a Belles Reference 150A amp,
Silverline Audio Prelude speakers Sensitivity: 91 dB, (but actually measured lower by Stereophile at 87.7).

Getting too much gain. It's usually loud enough at 9:00 on the volume knob.

I'll be doing surgery to it shortly to install the Auricap upgrade. While I got it apart I'm wondering if anyone here is familiar enough with the circuit to suggest a mod to lower the gain a bit?

I know people are going to suggest contacting Belles, but I couldn't get much help last time I called them, so I'm not going to bother.
traudio

Showing 3 responses by traudio

Rgs92,
Sorry, I must have been picturing the Apache.
Which tubes do you have in the driver section, 12AU7 or 12AX7? On of them has less gain than the other (I think the 12AU7 is lower gain).