Pioneer 8.25" HVT Sealed Active Subwoofer (ts-wh500a)

150 Watts Max Power (50 Watts Nominal)Proprietary New Speaker Design TechnologyJust 2-3/8" height for easy installationWhat is HVT?HVT stands for Horizontal Vertical Transforming technology which transforms horizontal movement into vertical movement of a woofer diaphragm to produce true, powerful and wide-range bass.Th