Memphis Audio 12" Street Reference Powered Bass System SRXE112VP The Memphis Audio SRXE112VP Single 12" Powered Bass System was designed with quality and performance in mind. These bass systems feature a subwoofer and enclosure with a Memphis Audio SRX250.1 Street Reference Series Mono Subwoofer Amplifier. The enclosure design was built to the exact parameters for the included 12" Street Reference subwoofer which maximizes the bass output and performance of the system. Features: Single 12" tuned ported enclosure 1 SRX1240 12" Subwoofer installed SRX250.1 Amplifier Included Remote Level Control Included Memphis Audio SRX1240 12" Street Reference Single 4-Ohm Subwoofer Size (in) 12" RMS Power (w):250 Peak Power (w):500 Sensitivity (dB):85 Magnet Size (Oz):39 Mounting Depth (in):4.92 Cut Out Diameter (in):11.10 Voice Coil Diameter (in):2 Memphis Audio SRX250.1 Street Reference Series Mono Subwoofer Amplifier RMS POWER 4Ω (w):150 x 1 RMS POWER 2Ω (w):250 x 1 THD% 4Ω <1% Frequency Response:30Hz - 250Hz Dimensions L x W x H 10.08 x 8.07 x 2 Input Range: 110mV-5.5V