These are alright, but not the most reliable. At least, the amps they use arent. I assisted my father installing an 8inch powered Bazooka in the back of his 2001 Explorer Sport, and it sounded alright but popped a transistor after a very long drive. Simple fix, but the transistor was completely destroyed and we couldnt find a wiring diagram online so we could not repair it (now the sub is part of my home theater and the built in amplifier is in the trash). After doing a lot of searching, we found a "DUB Mag Audio DUB8AT" by Audiobahn on ebay or something, for cheaper than the Bazooka. I talked my dad into jumping on it. When it came, we were pleasantly surprised. Although the "grill" is fairly gaudy, the finish on the sub is very nice. Instead of raw material like the Bazookas, it has like a fake leather wrapping all around. And the sound, the sound is MUCH better than the Bazooka was. I cant remember if it was louder or quieter, but quality was higher. So, I suggest comparing the competition before jumping on a Bazooka tube