Amazon.com: Sound Town 15" 450W Raw Woofer Speaker with 4" Voice Coil, 100 oz Magnet, Replacement Woofer for PA/DJ Subwoofer, 8-ohm (STLF-1504-8) : Musical Instruments
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Amazon.com: 5Core Pair 10" inch Subwoofer Replacement DJ Speaker Car Sub Woofer 1000W w/ 8 Ohm WF 10120 2PCS : 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: Earthquake Sound PRO-X188 18-inch Pro-X Series 8-Ohm Die Cast Subwoofer (Single) : Everything Else
Amazon.com: PRV AUDIO 12 Inch Midrange Speaker 12MR2000 8 Ohm 2000 Watts, 4 in Voice Coil Midbass Woofer for Pro Audio Systems (Single) : Electronics
Amazon.com: MakerHawk 2pcs Ar duino Speaker 5 Watt 8 Ohm Double Cavity Mini Speaker Full-Range Cavity Advertising Machine Small Speaker 3.3V 5V with JST-PH2.5mm-2 pin Interface : Electronics