I have a PSB Subsonic 5 sub that I have owned for about 4 years. It was working fine last Thursday, I was out of town until this past Monday. When I sat down to watch a movie there is serious distortion and it is not as loud. I looked at the cone and see no visable problems such as a tear or something. I also connected it to my other receiver and it still is distorted. Any suggestions on what the problem could be? Also how long should a sub last? If it hadn't been used in those three days, how can it have problems? I would like to use this as an excuse to buy a SVS PB10-ISD but money is tight, (single father of two). Is the SVS really that much better than the others. I have looked at tweeter and they have a Velodyne DLS3750 for $250. Again will the SVS be that much better? Especially for music? Thanks for your input and help!