This Pyle Blue Wave subwoofer pushes 250 watts of booming bass! The 8” high-power amplified subwoofer tube has a built in high output amplifier. It’s equipped with a blue polypropylene cone and specially treated black rubber edge suspension for a distortion-free sound that rocks. The 1.5” aluminum voice coil provides the punch, while the bass reflex vent adds even more sub-bass. And these don’t just sound great – they look great, too, thanks to the blue LED light behind the grill. Takes speaker level and line level (RCA) input.