I just got a Sunn Beta Bass 115 combo in trade. I was super excited because they are pretty popular amongst the stoner rock crowd and people get some awesome tones with guitar and bass. Well i brought it home and plugged in... And was dissapointed. I could have a conversation overtop of the amp with everything dimed. I tried plugging it into a different cab to see if it was the speaker and same thing. Any ideas what could be wrong? The guy before me had it only a short while, but said the previous owner had wired in a different master volume pot, is it possible that it has an incorrect resistance rating? You also have to turn it the opposite direction to increase volume. Or does this sound like something wrong with the power section? Any help would be appreciated, i am very excited about this amp. Thanks TB!