Both the 12 and 15 inch models are sick. If you have them in the correct box(Vented is best) and if your box sucks so will the sound. So the 1 star rating is, example A. I gurentee the chosen enclosure is either a sealed box wich by chance is TOO SMALL or a junk box all together. These hit harder than kicker comps and CVRs. BUY WITH PORTED BOX. and you WILL be happy.