These woofers are some of the best on the market, I have had trouble with woofers blowing easily by cranking it up but these give you something extra to crank further than ever. The size is perfect to custom fit with any woofer set box and fit on the back floor of the car or in the trunk without sacraficing too much space. With many radio stations going digital it gives an extra boost of sound as well allowing the speaker to pick up the more finer sounds and really deliever more of a good sound rather than being distorted like many other speakers seem to do even with digital tuning. In addition, the problems I have had with woofers blowing has been cushioned so to speak by the addition of an advanced cooling system installed in each woofer to work harder and prevent strain on the woofers. Overall a very good product, however, the price is a bit high but you pay for the quality of the product and therefore you get a great value regardless.