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Amazon.com: CQRobot Speaker 3 Watt 4 Ohm Compatible with Arduino Motherboard, JST-PH2.0 Interface. It is Ideal for a Variety of Small Electronic Projects. : Electronics
Amazon.com: Dweii 4 PCS Speaker 3 Watt 8 Ohm Mini Speaker 8ohm 3w Loundspeaker Micro Speaker for Arduino with JST-PH2.0 Interface for Small Electronic Projects Advertising Machines LCD TV Monitors : Electronics
Amazon.com: Ciglow Full Range Speaker, 3 Inch 4ohm 5W Mini Full Frequency Audio Speaker Loudspeaker Home Stereo Woofer Loudspeaker for Multimedia Sound Box DIY. : Electronics
Amazon.com: Healifty Full Range Speaker 4 Ohm 5w Mini DIY Audio Subwoofer Loudspeaker Computer Speakers Home Car Audio Speakers : Electronics
Amazon.com: CHOOYO 1Pc 3 Inch Audio Speaker 4Ohm 8Ohm 15W Full Range HiFi Treble Mid Bass Balance Loudspeaker Bookshelf Speakers Desktop DIY (Color : 1pc 4ohm Square) : Electronics
Amazon.com: Gikfun 4Ohm 40mm Diameter 3W Full Range Audio Speaker Stereo Woofer Loudspeaker for Arduino (Pack of 2pcs) EK1794 : 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: Granvela 20W 3-inch Full Range 4-Ohm Speakers Pair of Flax-Fiber Cone for DIY Multimedia and Computer Speaker Systems : Electronics
Amazon.com: MIYAKO USA (TS-416 4" Professional Grade Replacement for Speaker 50 watts Power at 4 ohms 10oz Magnet Round Speaker for Repairs Black (1 Pair) : Electronics
Amazon.com: GRS 3FR-4 Full Range 3" Speaker Driver 4 Ohm : Electronics
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