Check the listing for details. FBT X-SUB 115SA Processed Compact Bass Reflex Active 15" DJ PA Subwoofer. Condition: New. Listed at 979.00 USD. The FBT X-SUB 115SA provides the following performance criteria: frequency response of 42Hz to 120Hz @ -6dB, maximum SPL of 135 dB peak, 1200W Class D amplifier. The FBT X-SUB 115SA provides a DSP processor with 4 presets (2 responses with 2 different cut-off frequencies). The FBT X-SUB 115SA feature 0.59\" birch plywood construction with scratch resistant black paint finish with M20 top mounted stand adapter, two FBT design aluminium handles and four optional 100mm/3.93\" transport wheels. The control panel provides two channels with stereo combo XLR/jack in-outs, stereo XLR HP filter outs, level control, preset switch, 0°/180° phase reversal switch, prt-lmt led indicators. FBT X-SUB 115SA Compact Bass Reflex 15" Subwoofer Features: Active subwoofer. 15" woofer / 3" voice coil. Frequency response 42Hz - 120Hz. 4 DSP presets. 1200W RMS Class D power amplifier. 15mm / 0.59" birch plywood cabinet. Optional 100mm / 3.93" transport wheels. M20 stand pole mount. Each X-SUB 115SA Retail Box Includes: (1) FBT X-SUB 115SA Processed Compact Bass Reflex Active 15" Subwoofer