JBL's jaw-dropping Stage 800BA subwoofer measures less than a cubic foot and delivers an impactful performance. Inside the slot-port enclosure is a system tuned 100 watts RMS class D amplifier and 8"" (200mm) subwoofer. The compact Stage 800BA will provide tight, deep bass in any car audio system. The subwoofer and amplifier have been engineered as a system to ensure great distortion-free bass even at high output levels. The rigid lightweight polypropylene woofer supplies the signature punch and clarity of JBL bass.