blown speakers

[DavePS3]

Adjust the crossover on the sub closer to the 1o'clock position. Take your LFE level on the receiver down to 0 and your subwoofer level (on the receiver) up full. Play something bass heavy. If it distorts, lower the subwoofer level on the receiver. The volume on your subwoofer shouldn't be any higher than half way, especially on less-expensive subs. The amplifers inside distort easier once you get past half volume. Try that anyway. I've worked with and sold subwoofers from Velodyne, JM Labs, Mirage, Energy, Sunfire, Definitive Technology, Boston etc... this plan pretty much works with them all.