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2 Pack American Bass 15" Subwoofer 1200W RMS Power DVC 4 Ohm Elite 1544 Series : Electronics - Amazon.com
Amazon.com: Harmony Audio HA-R104 Car Stereo Rhythm Series 10" Sub 500W Single 4 Ohm Subwoofer : Electronics
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Amazon.com: Audiopipe TXX-BDC4-10 Subwoofer Quad Stack 10 Inch 1800 Watt High Performance Powerful 4 Ohm DVC Vehicle Car Sub Audio Subwoofer Speaker System, Black : Electronics
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Amazon.com: Facmogu 2PCS 3in Bullet Full Range Speaker 4 Ohm, 15 Watt HiFi Tweeter Midrange Bass Integrated for Vocals Home Stereo Surround Sound Theater, 137Hz-30KHz Frequency Response 88dB : Electronics
