Just received my new sub, first impressions are excellent, finish is better than I'd hoped. Problem is I cant seem to get much volume out of it, I have to turn the dial up three quaters on the sub and up to +12db on my denon amp to actually hear it. Ive got it connect from sub pre-out to the (R) mono on the sub. Ive set my crossover to 80hz on sub and amp. what else am I doing wrong?