Street Reference Bass systems are the perfect way to add thundering bass to your ride without breaking the bank. These all in one systems come with the subs, box and amp all in one package, making them the perfect addition to any system needing that extra thump. The enclosures have the Memphis Audio logo embroidered on the box for a custom look. Each package comes with our SRX subs and one of our SRX amps included. Features: Slot port vented enclosure SRX250.1 amplifier built-in Woven tinsel leads 2" diameter 4-layer copper wound aluminum heat treated voice coil Recommended amp kit 8GKIT Specifications: Subwoofer Size (in) dual 12" Subwoofer RMS Power (w) 500 Subwoofer Peak Power (w) 1000 Amplifier Power: 250 Watts Sensitivity (dB) 85 Magnet Size (Oz) 39 Voice Coil Diameter (in) 2 Dimensions (in) 16.75 x 15 x 15.75