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Amazon.com: Pyle 4" Car Sound Speaker (Pair) - Upgraded Blue Poly Injection Cone 2-Way 180 Watt Peak w/ Non-fatiguing Butyl Rubber Surround 110 - 20Khz Frequency Response 4 Ohm & 3/4" ASV
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Amazon.com: AUDIOTEK Pair of Car Vehicle Subwoofer Audio Speaker - 10 Inch Competition Grade Pressed Paper Cone, 4 Ohm Impedance, Advanced Air, 1000W Power for Stereo Sound System K710 (2 Subwoofers) PK10 : Electronics
Amazon.com: DS18 G5.7Xi GEN-X 5x7 2-Way Coaxial Speakers 150 Watts Max Power 4-Ohm - Full Range Speaker with Dome Tweeter Great for Car Stereo Sound System - 2 Speakers
Amazon.com: Pair of Black Diamond 6.5" Component System Speaker 2 Way 4-Ohm 120 Watts : Electronics
Amazon.com: Pyle Car Two Way Speaker System - Pro 6.5 Inch 240 Watt 4 Ohm Mid Tweeter-Audio Sound Speakers For Car Stereo w/ 30 Oz Magnet Structure, 2.25” Mount Depth Fits Standard
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Amazon.com: Fielect 3W 4 Ohm DIY Magnetic Speaker 50mm Diameter Full Range Audio Speaker Stereo Woofer Loudspeaker Replacement for Arduino, 1Pc : Electronics
Amazon.com: INTCHE 2Pcs 4 Ohm 5W Audio Speaker 2.5 Inch 66mm Full Range Rubber Cone Altavoz Square Loudspeaker DIY Home Theater Sound System : Electronics
Amazon.com: Audiopipe TXX-BDC4-8 8 Inch 1000 Watt High Performance Powerful 4 Ohm DVC Vehicle Car Sub Audio Subwoofer Speaker System, Black : Electronics
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Amazon.com: AudioPipe TXX-BDC4-12 Dual 4 Ohm 12 inch 2,200 Watt Car Speaker Subwoofer (2 Pack) Bundle with QPower QBOMB12TB Dual 12 Inch Triangle Ported Car Audio Subwoofer Box Enclosure with Bedliner Spray
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Amazon.com: CHOOYO 1.5 INCH 40MM Audio Speaker 4 Ohm 4W Full Range Neodymium Mini Altavoz for Flip 2 Harman Kardon Speakers Repair DIY 2PCS : Electronics
Amazon.com: DIANN 4pcs 2" 4Ohm 3W Full Range Audio Speaker Stereo Woofer Loudspeaker for DIY Speaker : Electronics
Amazon.com: Fielect 2Pcs DIY Magnetic Speaker 3W 4 Ohm Full Range Audio Speaker Stereo Woofer Loudspeaker Replacement for Arduino, 52mm Diameter : Electronics
Amazon.com: DS18 G4Xi GEN-X 4" 2-Way Coaxial Speakers 120 Watts Max Power 4-Ohm with Mylar Balanced Dome Tweeters - Full Range Car Replacement Speaker - Grill Included - 2 Speakers : Everything Else
Amazon.com: GEAVESS 6.5" Car Audio, 2 Way Full Range Coaxial Speakers System, 4 ohm 100 Watt Peak Power Car Speaker with Voice Coil and Rubber Surround, for Car Stereo Sound (Black, Pair) : Electronics