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Behringer VQ1500D 500W 15 inch Powered Subwoofer | Sweetwater
Yamaha SW115V 15" Passive Subwoofer, 500W | Full Compass Systems
Audio Ace Bluff - 12" Subwoofer, 500W RMS, D4
Resilient Sounds RS 10" D4 - 500w RMS Subwoofer
Rockville RVB10.1A 10" 500W Powered Car Subwoofer + Sub Enclosure Box + Amp Wire Kit - Walmart.com
Coustic C124 12″ 12 Inch Single 4 Ohm Voice Coil Car Audio Subwoofer 500W MAX 715442740451 | eBay
Sound Town 15” 500W Cast Aluminum Frame Woofer (Low Frequency Driver), Replacement Woofer for PA/DJ Speakers or Subwoofer Cabinets (STLF-15120A)