Phoenix Gold Z8150 - Z Series 8" Inch 150 Watts Underseat Active Amplified Car Sub Subwoofer EnclosurePG Z8150 150 Watts Active Amplified UnderSeat Under Seat Car Sub Subwoofer The Z8150 subwoofer is designed with maximum yield in a space at a competitive price. There are a few subwoofer boxes which are suitable for any application, for good additional layer to a heavy dual subwoofer box. Features 8 "Compact Active Subwoofer Ideally suited for expansion directly behind original radio or aftermarket radio Specifications: 8 "closed flat 150W subwoofer