21" subwoofer speaker system

Freqency Range(-10dB)：17Hz-100Hz
Freqency Response(±3dB)：27Hz-100Hz
Sensitivity(1W/1M)：99dB 
Rated Impedance：8Ω 
Peak Max SPL：131dB 
Rated Power AES(sequential/program/peak)：800w/1600w/3200w
Woofer Unit：21" alu frame +φ100 alu wires voice coil+ new tech hollow cone+W cloth surround+φ220 ferrommagnet
Product Max Dims：620*610*778MM