does anyone know what exactly provides the power in an amp? i have a bd 1000 and when i first heard the power i was impressed. one of my subs sounded funny and the bass power dropped a little. i think the dust cap was leaking some. i con't to play them until i got fed up with the sound and decided to put glue on it. played them a day or so later now the bass power has dropped tremendously. subs made popping sound. i figured they were messed up so i sent them to be repaired just to find it was nothing wrong with them. so i tested anothe pair of subs and they sounded the same way. something must be up cause now just to get the subs moving i have to turn the gain up very high. when i first got the amp, the subs looked like they could not take another notch of power, even at 1/3 power. mtx4000's were used to see if amp was putting out, and there is no way anyone can say that mtx4000's can handle a bd1000! they were moving like they were on a 50w amp.