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 82
JBL Basspro SL2 - 8" (200mm) Compact Amplified Car Audio Woofer UnderSeat Sub | eBay
JBL BassPro SL2 Active Underseat Car Subwoofer with built in amplifier - Under Seat 8'' Subwoofer Car with 125 Watt Power Amplifier : Amazon.co.uk: Automotive
Extreme Bass Test JBL 8 Inch Subwoofer | Bass I Love You | Arnab Electro DIY - YouTube