not sure if it was right now, but i have it in a not so optimal location, right next to my listening position, and can usualy hear it working through its paces, but today, no. tried adjust volume from the avr, not much difference, tried to adjust the sub, got some static and popping turning the knob, set to lfe and lfe from avr, sub has been set to just a smidge above 50% on the amp, since i was corrected a couple months back. abr sub level is about 75%, avrset to reverse phase, sub set on 180. took the grill off, the cone kinda just barely tries o move, but still has full motion when moved by hand. havent taken it apart yet. I wasnt on keeping this as a main sub, as i have 2 505's and the rbh, but was thinking of saving this for down the road or selling to a buddy. i'll check my warranty status, but hasnt been 2 years since i bought it.