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Amazon.com: DS18 PRO-X6.4BM Loudspeaker - 6.5", Midrange, Red Aluminum Bullet, 500W Max, 250W RMS, 4 Ohms - Premium Quality Audio Door Speakers for Car or Truck Stereo Sound System (1 Speaker) : Electronics
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Amazon.com: Sound Storm Laboratories SSL EX365 6.5"" 150W 3-Way Car Coaxial Audio Black Speaker Pair with Poly Injection Woofer Cone and 4 Ohm Impedance : Electronics
Amazon.com: Orion XTR69.3 Serie XTR 6x9 inch 4 Ohm Car Audio 3-Way Coaxial Speakers 500 Watts Max Set of 2 Speakers : Electronics
Amazon.com: Cadence 6.5 Inch 4 Ohm Vocal Midrange Blue LED Light Car Speaker with Grill, 150 Watts Max Power, 75 Watts RMS, 1.5 Inch Voice Coil Pro Audio Loudspeaker Xenith Series XM64ViL, Single : Electronics
Amazon.com: Recoil RCX4 Echo Series 4-Inch Car Audio Coaxial Speaker System : Electronics
Amazon.com: Pyle Car Subwoofer Audio Speaker - 8in Non-Pressed Paper Cone, Black Plastic Basket, Dual Voice Coil 4 Ohm Impedance, 800 Watt Power and Foam Surround for Vehicle Stereo Sound System -
Amazon.com: Pair of Sundown Audio LCMR-6.5 Pro Audio 6.5" 100W RMS 4 Ohm Midrange Speakers : Electronics
Amazon.com: uxcell 3 Inch Mounting Dia 5W 4 Ohm Midrange Speaker Replacement for Car : Electronics
Amazon.com: Gikfun 2" 4Ohm 3W Full Range Audio Speaker Stereo Woofer Loudspeaker for Arduino (Pack of 2pcs) EK1725 : Electronics
Amazon.com: 6.5" Three-Way Sound Speaker System - 180 W RMS/360W Power Handling w/ 4 Ohm Impedance and 3/4'' Piezo Tweeter for Car Component Stereo, Round Shaped Pro Full Range Triaxial Loud Audio -
Amazon.com: 5.25” Car Sound Speaker (Pair) - Upgraded Blue Poly Injection Cone 3-Way 200 Watt Peak w/Non-fatiguing Butyl Rubber Surround 100-20Khz Frequency Response 4 Ohm & 1" ASV Voice Coil - Pyle
Amazon.com: DS18 SLC-MD10 Car Subwoofer Audio Speaker - 10" in. Polypropylene Cone, Black Steel Basket, Dual Voice Coil 4 Ohm Impedance, 800W MAX Power and 200W RMS Power, for Vehicle Stereo Sound (
Amazon.com: Car Vehicle Subwoofer Audio Speaker - 12 Inch Blue Injection Molded Cone, Blue Chrome-Plated Steel Basket, Dual Voice Coil 4 Ohm Impedance, 1200W Power, for Vehicle Stereo Sound System - Pyle