This sub is a great purchase for the price. Not only does this sub produce good bass frequencies it also is a good competitor. From what I've seen it has a pretty big damn magnet and the cone and stitching are both made of durable material. If you wire this sub up correctly or get an audio retailer to do it you sure to not go wrong. Most people who complain on this site about there subs shorting out or quitting is because they were installed improperly. I've his 154 on the db with 2 of these in a custom box.