I just got another B Quad - I sold my white one w/ LED's ( after market LED's ) a long time ago.
The stacked volume pot on it has issues, and I hear this is normal.
So, here it is May of 2012, just to put a time reference here, even though you could just look to the upper left, but in case you didn't know to do that.
I took my B Quad to my friend and local tech to give it a once over. I told him things just don't seem correct with it.
He said it's like a rat's nest in there. A LOT of wiring. Anyway, the Piezo volumes had been turned down all the way from the back of the bass, hence the knobs had no affect.
Secondly, the magnetic pickup stacked volume pot is "bad". He called Peavey and they have the part for it. It costs a whopping $60 ! Considering a new Cirrus preamp is only $100.
I guess owning a B Quad is like owning a luxury car. Once you drive it, you can never go back to economy models. Using the same metaphor, I guess that means replacement parts will be expensive, too, BUT, I am so thrilled to know that replacement parts for the B Quad are available. I don't know if they have entire replacement preamps if it ever goes out, and I hope I never need to find out. Since we all know Peavey is known for reliability, I feel pretty safe.
So, since the stacked volume pot seems to be a common part to fail on the B Quad, I am posting this for those of you who have one so you know that Peavey still carries them in stock !!
Mike