Features:8" woofer amplifier power: 50 wattsfrequency response ± 3db tbdinput: high/line leveloutput: high levelphase switch: 0° /180°level control: variableauto turn on/offlow pass slope: 18dbsubsonic filter: 18db@25hzdimensions (hxwxd): 15-1/2" x 9-3/4" x 13-7/8"weight: 0 (lbs)