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5pcs/lot New Ultra-thin Mini Speaker 4 Ohms 1 Watt 1w 4r Speaker Diameter 28mm 2.8cm Thickness 5mm - Acoustic Components - AliExpress
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Amazon.com: DS18 GEN-X124D Subwoofer in Black - 4 Layer Black Aluminum Voice Coil, 12", 900W Max Power, 450W RMS, Dual 4 Ohms - Powerful Car Audio Bass Speaker (1 Speaker) : Electronics
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