Polk Audio DSW PRO 550 Powered Subwoofer 200w Class 'D' With Remote Control | eBay
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Audio Pro - AUDIO PRO HISTORY CONTINUED... At the CES show in Chicago 1979, Audio Pro presents the B2.50 powered subwoofer, A4.14 bi-amplified speaker and the TA150 computer controlled receiver. All three
Active 100w Bass Speaker | RS100 Pro Audio Visual & cctv