Amazon.com: Alto Professional TS312S | 2000 Watt 12 Inch Powered Portable PA Subwoofer With Selectable DSP Output Modes For Matching With Companion PA Speakers : Musical Instruments
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B Stock : Alto TS212S Sub 1250-Watt 12" Powered Subwoofer - Andertons Music Co.
SPEAKER BOX ALTO 12" TS312 POWERED SOLD EACH - A. Ally & Sons