Product Details: 8" Active Enclosed Low Profile Powered Ported Subwoofer System. Power Handling: . Peak: 300 watts. RMS: 150 watts. All weather woven fiber glass woofer cone. S/N Ratio: 91 dB. Ported Enclosure Design. Output Impedance: 2 Ohm. Adds crisp, clean bass to any system. Built-in Class-D Amplifier. Wired remote bass level control included. LED power (green) and protect (red) indicators. Variable Bass Boost (0 to +12 dB bass boost at 45Hz). Speaker-level (high-level) inputs with signal sensing for automatic turn-on. Heavy duty die-cast aluminum alloy heat-sink for extreme heat dissipation. Silver-plated RCA level inputs. Silver-plated screw terminals. Input sensitivity: . Low Level Input: 150mV - 6V. High Level Input: 1V - 8V. Variable low-pass filter (50-150 Hz). Phase Shift: 0-180° . Frequency response: 20-150 Hz. 8 gauge power and ground wiring is required for installation. Dimensions: Length: 13” x Width: 9. 4” x Height: 3. 2”. Authorized Internet Dealer. 1-year Manufacturer's Warranty