IS S115A 15" wooden subwoofer. - 2 channel inputs and outputs. - 15" woofer. - RMS power 350W Class AB. - Peak 700W. - Frequency response 20hz-120hz. - Peak SPL 128 db. - AC110V/AC230V power supply 2 CHANNELS INPUT & OUTPUT 15" woofer RMS Power 350W CLASS AB Amplifier Peak power 700W Frequency range 20Hz-120Hz Peak spl 128 dB Power supply AC110V/AC230V