Yamaha HS8S 8 inch Powered Studio Subwoofer | Sweetwater
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Amazon.com: MB Quart DS1-204 Discus Shallow Mount Subwoofer (Black) – 8 Inch Subwoofer, 400 Watt, Car Audio, 2 Inch Voice Coils, UV Rubber Surround, Best in Sealed Enclosures : Electronics
SVR-8 | 8" 800 Watt Max Power Car Subwoofer | Skar Audio
JBL Stage 810 8" Car Audio Subwoofer - Walmart.com