Well this little sub suprised me. I had 2 15's with a rockford amp, killed my 15's and sold my rockford amp. Got a Lanzar Vibe286 amp in a trade, and got one of these little pioneer subs from wal mart, and wow. I am pushing probably 350 RMS to the sub and it is booming like a big boy. I need to tune it back down a little bit to give it a proper break in, but after that, I plan on seeing what it can really do. All I can say is, I plan on buying one more of these and a dually sealed box. I listen to rock, and I like to hear the double kick, but I don't like to overload the treble with bass. But I still want enough boom to throw on some good beats and kick it up a notch. These subs, for 45 each, fit the bill pretty well. Can't beat em for the money. Beware, they are overpriced at wal mart, about $13 more than on this site.