Alto Professional Truesonic TS218S 18″ Powered Subwoofer (Discontinued)

77 out of 100. Incorporating 125+ ratings and reviews.
Alto Professional


  • 1250 watts of peak power output
  • Custom engineered high-efficiency Class D amplifiers with passive cooling design – no fan means the speaker runs cleaner, quieter and has greater long-term reliability
  • 18-inch high-excursion woofer
  • (2) XLR+1/4-inch combo inputs + (2) balanced XLR line outputs
  • Polarity Reverse, Full-Range Output and Extended LF controls
  • Electronic clip, thermal and transducer overdrive protection
  • Rugged, internally-braced front-ported plywood cabinet
  • Integrated 35mm speaker pole socket

1 thought on “Alto Professional Truesonic TS218S 18″ Powered Subwoofer (Discontinued)”

  1. I bought my first Alto Professional Truesonic TS218S 18″ Powered Sub-woofer.

    I must say @ the price, it’s not a bad option. I expected more but for the money you spend, it’s worth it, I wouldn’t recommend these for large outside areas… It’s a Good indoor option, I found that when u push them a bit they start clipping @ gain pointing 3’o clock.

    Out of 5 stars, I’d give it a 3.

    I’m still getting a second one, just to complete my setup and eventually upgrade to EV.

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