JBL Stage 800BA Slot-Port Enclosure - Active Car Subwoofer with built in Harman Kardon Class D amplifier with 100 Watt RMS and 8" JBL Sub Woofer : Amazon.co.uk: Electronics & Photo
JBL STAGE 800BA | Sub Woofer with BOX | Croooober
User manual JBL Stage 800BA (English - 7 pages)
Amazon.com: JBL 8" Amplified Ported Subwoofer Enclosure with Sub Level Control, Black : Electronics