Alpine W10S4 BassLine Series Single 4 Ohm 500W Peak 10" Subwoofer with Harmony Audio HA-A400.1 Class D Mono 800W Sub Amplifier w/ Bass Remote and ASC DTB-2X10-CREW-UP Dual 10" Subwoofer Enclosure
Subwoofer Alpine SBG-1244BP passa banda 30cm 12" 800W - YouTube
Alpine Car Audio Systems 800W 12" bandpass subwoofer in custom enclosure | eBay