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Amazon.com: Pyramid 8 Inch Car Subwoofer Speaker - 350 Watt High Powered Car Audio Sound Component Speaker System w/ 1.5 Inch High-Temperature Kapton Voice Coil, 89.2 dB, 8 Ohm, 50 oz Magnet - Pyramid PW848USX : Electronics
Amazon.com: Pyramid PW1248USX 12-Inch 500 Watt High Performance 8 Ohm Subwoofer, Black : Electronics
Amazon.com: 5 CORE 15 Inch Subwoofer Speaker 3500W Peak High Power Handling 350W RMS 15" Replacement 8 Ohm Pro Audio DJ Sub Woofer w/CCAW Voice Coil Aluminum Frame 90oz Magnet 15-185 AL
Amazon.com: Goldwood Sound, Inc. Stage Subwoofer, Black, OEM 6.5" Woofers 180 Watts each 8ohm Replacement Speakers (GW-206/8-2) : Musical Instruments
Amazon.com: CHOOYO 6.5 Inch Subwoofer Audio Speaker 80W 4 8 Ohm High Power Fever Woofer Music Loudspeaker DIY for Bookshelf Sound System (Color : 8 Ohm) : Electronics
Amazon.com: DS18 PRO-X8M Loudspeaker - 8", Midrange, Red Steel Basket, 550W Max, 275W RMS, 8 Ohms - Premium Quality Audio Door Speakers for Car or Truck Stereo Sound System (1 Speaker), Classic : Electronics
Amazon.com: PRV AUDIO 6MB200 v2 6.5 Inch Speakers Midbass Woofer 8 Ohm, 100 Watts RMS, 200 Watts Program Power, 93.5 dB 1.5 in Voice Coil for Small Custom Enclosures Pro Car Audio System (Single) : Musical Instruments
Amazon.com: Pyramid WH8 8-Inch 200 Watt High Power Paper Cone 8 Ohm Subwoofer : Everything Else