BOSS Audio Systems BASS8 8 Inch Under Seat Powered Car Subwoofer – 800 High Output, Low Profile, Built in Amplifier, for Truck, Boxes and Enclosures, Remote Subwoofer Control

Good option to add to a budget or stock car audio setup. Won't impress anyone but it fills in that missing thump and low end. Do note that this doesn't come with any of the required wiring, so make sure to pick up a wiring kit (I got some cheapo kit here on amazon for like $12, just make sure its at least 10 gauge) and I wired directly into the rear speaker wire. Out of the box it's set to a base non-tuned setting so won't sound good at all - you NEED to tune and adjust the settings on both the sub and your head unit. Read the manual, it explains how to set the gain. I think I ended up somewhere with the gain set to 3/4, bass boost almost near max, and the high pass filter a half or turn up from middle (this is important if you're regular speakers don't produce a lot of bass). I also turned down my head units "bass boost" setting from +3 to +1 as the regular speakers don't need to try and fill in bass anymore and let them shine more in their minds and highs.

No es tan potente, es para un carro prqueño y que el sonido vaya bien con ese pequeño bajo

I got this for my husband. He has a an extended cab toyota tocoma. It lends a perfect amount of base in that amount of space. It sounds really great. He is very happy.

No funciona como yo lo esperaba

For the price of this sub, it's great. Added some much needed bass to my truck. By all means your not gonna win a sound competition with it. But if your looking to add some much needed bass to your vehicle, this is it. They do have a higher priced ones such as the bab8 n the 4k one. They may give better bass but I have no experience with those models. But great sub. Will b buying another to add to the truck. But I would suggest buying the wire kit also. Makes installing it easy.