Sunfire True Subwoofer Mark II (MKII) is a legendary, ultra-compact 10-inch subwoofer designed by Bob Carver. Famous for fitting massive power into an 11-inch cube, it produces deep bass down to 18 Hz.Review full technical specifications for the MKII below:Key SpecificationsDesign: Sealed enclosure, push-pull configuration (1 active 10" driver + 1 passive 10" radiator)Amplifier Power: 2,700-watt RMS Tracking Downconverter (TDC) amplifierFrequency Response: 18 Hz to 100 Hz (± 3 dB)Total Air Displacement: Over 235 cubic inches (allows it to move massive amounts of air for its size)Sound Pressure Level (SPL): > 110 dB