BOSS Audio CX154DVC Chaos Exxtreme 15-inch 1800-watt DUAL Voice Coil Subwoofer Subwoofer Size: 15"" Subwoofer Type: Stand Alone Total Power Output: 1800 Watts RMS Power: 900 Watts @ 4 Ohms Frequency Response: : 25 Hz to 1000 KHz Voice Coil Size: 2.5 Voice Coil Structure: DUAL Cone Material: Poly Injection Box Type: Sealed Only Mounting Depth: 718"" Sealed Enclosure: Small = 2.5 CuFt; Large = CuFt Dimensions (H x L x W): : 8"" x 15.38"" x 15.38"" 15-inch subwoofer with 1800 watts maximum power handling Poly injection cone Dual 4 ohm voice coils for wiring versatility Frequency Response: 25Hz - 1kHz Mounting Depth: 7-1/8 Inches