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Sony SA-SW3 200W (Peak) -130W (RMS) Wireless Subwoofer for HT-A9/A7000/A5000/A3000 : Amazon.ca: Electronics
PRISTINE Sony Model SA-WM20 Powered Active 50 Watt Subwoofer Theater Sub WORKS 27242585409 | eBay
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SONY SA-WM20 50w Powered Subwoofer Tested Working Home Theatre Sub Music | eBay
SONY SUBWOOFER SA-WM20
PRISTINE Sony Model SA-WM20 Powered Active 50 Watt Subwoofer Theater Sub WORKS 27242585409 | eBay
SA-SW5 | Optional Wireless Subwoofer | Deep Bass | Sony Canada