Boss Audio Systems 600-Watt 8-Inch Subwoofer & 6.5 In Coaxial Speakers (2 Pair) - Walmart.com
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 GTi Subwoofer 15” for Sale in Compton, CA - OfferUp
Amazon.com: EMB Professional 12" 1200W SB-12 Replacement Speaker for JBL, Peavey, Cerwin Vega, Gemini, EMB, BMB, Pyle-Pro, Mr.DJ & Many Brands! Protects the woofer and speaker in open installations.