Celestion S80 Da 8" S80 Subwoofer (Dark Apple) APPLE S80 SUBWOOFER DARK APPLE;BUILT-IN 100W AMPLIFIER; DOWN-FIRING 210MM PP-COATED DRIVER;CREATES EXTENDED LOW FREQUENCIES FOR HIGH IMPACT & SPECIAL EFFECTS;FREQUENCY & OUTPUT LEVELS CAN BE FINE TUNED TO ACHIEVE THE IDEAL BALANCE WITH MAIN SPEAKERS & ROOM ACOUSTICS