SPL $. $. Amplifiers: 1700 1 ohm RMS 3000 max Dimensions: 12.75 x 2.3 x 11.7 Bass Knob Fully Regulated PWM power supply Four way protection circuit High speed digital circuitry 1 ohm stable Bridging synchronization Variable low pass 50hz-150hz Variable subsonic filter 15hz-40hz Variable subwoofer EQ @ 45hz Phase switch 0-180 Remote dash mount