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Amazon.com: CQRobot Speaker 3 Watt 8 Ohm Compatible with Arduino Motherboard, JST-PH2.0 Interface. It is Ideal for a Variety of Small Electronic Projects. : Everything Else
Amazon.com: Pack of 2 Full Range Bookshelf Speaker, 3 Inch 8 Ohm Anti-Magnetic HiFi Tweeter Wooden Enclosure Home Audio Woofer Multimedia Speakers (8Ω) : Electronics
Amazon.com: Skar Audio FSX65-8 6.5" 300 Watt 8 Ohm Pro Audio Midrange Loudspeaker, Each : Electronics
Amazon.com: YXQ 0.5W 8 Ohm Micro Internal Speaker Magnet Loudspeaker 30mm Dia Round Metal Shell with Wire DIY Slim for PC Laptop DVD/EVD(4Pcs) : Electronics
Amazon.com: 6 Pcs 2W 8 Ohm Small Speakers Metal Shell Round Internal Magnet Speaker for Mini Speakers, DVD, Evd, Mini Multimedia Speakers : Electronics
Amazon.com: YXQ 1W 8 Ohm Micro Internal Speaker Loudspeaker 28mm Dia Round Metal Shell Wire(4Pcs) : Electronics
Amazon.com: Gikfun 8ohm 0.5W Woofer D36mm Speaker for Arduino (Pack of 2pcs) EK1411 : Electronics