Blue injection-molded cone.High-temperature dual Kapton voice coil.Chrome-plated basket.PL-1090BL mounting depth: 6 1/4".PL-1290BL mounting depth: 6 1/2" Pyle’s Blue Wave series speakers don’t just sound great – they look great, too. Feast your eyes upon the azure curves of Pyle’s Blue Wave series and you’ll agree. The PL1590BL is a 15” booming 1400 watt subwoofer designed with the bass lover in mind. This subwoofer will make your music growl in your vehicle or at home, in any type of enclosure: sealed, vented, or open-air. The blue injected molded cone looks great – and thanks to a 90 oz. magnet, non-fatiguing big rubber suspension, and a rubber magnet boot, it sounds great too. The flat progressive spider design improves the speaker’s mechanical stability – increasing the life of your speaker and keeping your sound clearer over time. Connect using the silver plated terminals for a distortion-free sound.