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55-3230 - Multicomp Pro - Woofer with Polypropelyne Cone and Rubber Surround, 6 1/2", 50W RMS at 4 Ohm
Amazon.com: Bluetooth Amplifier Board 2.1 2X50W+100W 12V-24V Audio Power Amplifier Module Bass and Treble Control for Store Home Theater Speakers with Antenna : Electronics