Bandpass Amplified Subwoofer Built-in MOSFET 150 W power amplifier Large dual port bandpass design RCA/speaker level inputs Input level control/phase switch Built-in variable LPF (50 - 125 Hz, -12 dB/Oct) Aluminium die-cast heat sink Nominal output power: 60 W Frequency response: 35 - 200 Hz Sensitivity: 107 dB (in-car), max SPL 128 dB (in-car) Enclosure Volume 18 litres Dimensions (W x H x D) 274x316x412 mm Powerful Bass Sound