This Pyle Blue Wave subwoofer pushes 400 watts of booming bass! The 8 subwoofer tube has a high quality carpeted construction for that classic look. It s equipped with a blue polypropylene cone and specially treated black rubber edge suspension for a distortion-free sound that rocks. The 2 aluminum voice coil provides the punch while the bass reflex vent adds even more sub-bass ultimately achieving a frequency response of 30 Hz to 700 Hz.