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JBL Basspro SL2 - 8" (200mm) Compact Amplified Car Audio Woofer UnderSeat Sub | eBay
JBL PRX915XLF 15-inch Active Subwoofer | Buy online at Bax Music
JBL BassPro SL2 Active Underseat Car Subwoofer with built in amplifier - Under Seat 8'' Subwoofer Car with 125 Watt Power Amplifier : Amazon.co.uk: Electronics & Photo
JBL P1220BR 1600W Enclosed Subwoofer - P1220BR from JBL