1.this is 1*15/2*15" line array system Subwoofer 2.full sound,good penetrating,high peformance, 3.line array speaker,subwoofer

M100SUB subwoofer line array specifications
Frequency Response[a]	40Hz-600Hz±3Db
Sensitivity 1W@1m[b]	96dB SPL Nominal. 99 dB SPL Wideband
Nominal Peak SRL@1m[b]	122 to 130dB Peak (for 500 to1000W RMS Amp.)
Crossover Frequencies	120Hz Passive-6 dB per octave-Reactance compensation
Nominal Impedance	8Ω
Recommended Amplifiers	500 to 1200Watts into 8Ω
Components	LF1×15(380mm)
Height × Width × Depth	440×952×440mm
Weight	47kg
Connectors	2×NL4MP 4-pole SPEAKON

line Array speaker