Amazon.com: Audiopipe TXX-BDC4-12D2 Subwoofer Quad Stack 12-inch 1100 Watts RMS 2200 Watt Max Impedance Dual 2 Ohm DVC Vehicle Car Audio Subwoofer Speaker System Voice Coil 3" BASV 4-Layer : Electronics
Amazon.com: Dayton Audio DAEX32QMB-4 Quad Feet Mega Bass 32mm Exciter 40W 4 Ohm : Electronics
Amazon.com: Douk Audio Nobsound 1PC 2.5" inch Hi-Fi Desktop Full-Range Speaker High Sensitivity Speaker (4ohm) : Electronics
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Amazon.com: Eminence American Standard Alpha-4-8 (Pair) 4" Pro Audio Speakers, 55 Watts at 8 Ohms : Musical Instruments
Amazon.com: Planet Audio PX10 10 Inch Car Subwoofer - 800 Watts Maximum Power, Single 4 Ohm Voice Coil, Sold Individually : Electronics
Amazon.com: DS18 PRO-X10M Loudspeaker - 10", Midrange, Red Steel Basket, 600W Max, 300W RMS, 8 Ohms - Premium Quality Audio Door Speakers for Car or Truck Stereo Sound System (1 Speaker), Classic : Electronics
Amazon.com: Audiobank 2X AB10Pro Series 10" Midrange Coaxial Loud 1400W Speaker 4-Ohms Pair (2 Pieces) for Car, Van, ATV, Motorcycle, and Competition : Electronics
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Amazon.com: 5 CORE 8 Inch Car Audio Subwoofers 4 Ohm, 50W RMS, 0.81" CCAW Copper Coil, 90mm Magnet WF 8"-890 1 PC : Electronics
Amazon.com: Fielect 4Pcs 5W 4 Ohm DIY Magnetic Speaker Audio Speakers 77mm Diameter Round Shape Replacement Loudspeaker : Electronics
Amazon.com: Skar Audio FSX8-4 8" 350 Watt 4 Ohm Pro Audio Midrange Loudspeaker, Each : Electronics
Amazon.com: Harmony Audio HC-CMB65 Car Stereo Cabron Mid Bass Mid Range 6.5" Speakers 4 Ohm : Electronics
Amazon.com: PRV AUDIO 8 Inch Midrange Speaker 8MR500-4 Bullet, 500 Watts Program Power, 4 Ohm, 1.5 in Voice Coil Bullet Speakers for Car Audio Door Louspeaker (Single) : Electronics
Amazon.com: 5 CORE 10 Inch Speaker 2 Pieces 60 Watt RMS Pro Audio Car Speakers 4 OHM Raw Replacement Sub Woofer 13 Oz Magnet Clear Surround Sound SP-1090 2PCS : Electronics
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: 5 CORE 10 Inch Speaker • 850W Peak Power • 4 Ohm Full Range Subwoofer Audio • Car Bass Woofer • 1" Voice Coil • 23 Oz Magnet • Replacement Loudspeaker • Bocinas para Carro FR-10-120 WP : Electronics
Amazon.com: Skar Audio FSX10-8 10" 300 Watt 8 Ohm Pro Audio Midrange Loudspeaker, Each : Electronics
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Amazon.com: Gikfun 2" 4Ohm 3W Full Range Audio Speaker Stereo Woofer Loudspeaker for Arduino (Pack of 2pcs) EK1725 : Electronics
Amazon.com: 5 CORE 4 inch Car Woofer Driver 40W Max 20W RMS Power 4 Ohm Replacement Speaker Audio Stereo Dual Cone Concept WF472DC 1 Pair : Electronics
Amazon.com: (2) Skar Audio Sdr-10 D2 10" 1200W Max Power Dual 2 Ohm Car Subwoofers, Pair of 2 : Electronics
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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
