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Amazon.com: JBL Professional Control 312CS High-Output 12-Inch In-Ceiling Subwoofer Loudspeaker : Everything Else
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JBL MTC-300BB12 - BACKBOX FOR 12" C300 Best-in-Class Three Cubic Foot Back Box for 12? Models. Rectangular with Extra-Thick 16 Gauge Metal and Heavy Duty «? MDF Reinforcement on Top and Side
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Amazon.com: JBL Professional Control 12C/T-BK Compact 3-Inch Ceiling Loudspeaker, Black, Sold as Pair : Electronics
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