GLX1800.1D Gladiator RMS Power Rating @ 14.4V 4 ohms: 650 watts x 1 2 ohms: 1200 watts x 1 1 ohm: 1800 watts x 1 Wired remote bass level control included LED power (green) and protect (red) indicators Soft start turn-on 3-way protection circuitry (thermal, overload, and speaker short protection) Dual speaker terminals simplify the hookup of multiple speakers Heavy duty aluminum alloy heat-sink for extreme heat dissipation Variable low-pass filter (35-250 Hz, 24 dB/octave) Subsonic filter (24 dB at 15 Hz) Phase Shift: 0-180° Frequency response: 15-250 Hz 2 gauge power and ground wiring is required for installation Dimensions: 8-6/10" W x 17-6/10" L x 2-1/2" H