The UB3030DX ultra compact sub box delivers big bass in a small space! The compact enclosure is pre-loaded with a 12" 1000W slim-line subwoofer. The subwoofer has dual 4-ohm voice coils which are pre-wired in parallel to 2-ohm, giving maximum output when powered by a 2-ohm mono stable amplifier. Features o 12" subwoofer size o 1000 watts max power handling o 300 Watts continuous power handling o Dual 4-ohm heavy duty voice coils o Aluminised IPP dust cap o Reinforced SPP cone o Nitrile butadiene rubber high excursion surround o Hyper extended rear vented pole piece o Linear cotton spider with integrated tinsel leads o Custom shallow stamped steel powder coated basket o Frequency response : 25-1000 Hz o Efficiency : 86 dB/W/m o Impedance : 2-ohm