Amazon.com: JBL BassPro SL2 Active Underseat Car Subwoofer with Built in Amplifier - Under Seat 8'' Subwoofer Car with 125 Watt Power Amplifier : Electronics
JBL Basspro SL 8 inch 125W Car Active Speaker Auto Audio Ultra Thin Subwoofer Universal Vehicle Bass Subwoofers bright sound - AliExpress
Customer Reviews: JBL BassPro Hub Powered 11" subwoofer enclosure with 200-watt amp — mounts to hub of spare tire at Crutchfield