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Amazon.com: Alto Professional TS15S - 2500W 15-inch Subwoofer, Powered PA Speaker with 6 Selectable DSP Modes, Easy Setup, 132 dB, 3" Voice Coil, Superior Bass : Musical Instruments
DJ Supplies - Pair Alto TS215S 1250w Active Subs (Ex Demo) Available in store and Online £699. Link: https://www.djsupplies.co.uk/products/altots215sactivesub-1 | Facebook
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ALTO TS215S 15“ 1250W Powered Subwoofer (TS-SUB215S) – PA SYSTEM MALAYSIA - Design and Build with Public Address System
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