Alto Professional

Alto Professional Truesonic SUB18 | 18" Active Subwoofer (1200W Peak / 600W Continuous / Class D Power) - is currently on backorder. You may still purchase now though and we'll ship as soon as more become available.

In Stock & Ready to Ship!

Brand New ConditionMore InfoThis product is in the box as received from the manufacturer and comes with the original warranty.

  • Active subwoofer for live sound reinforcement
  • Extended low frequency, long-excursion 18-Inch woofer
  • Explosive 1200W (peak) / 600W (continuous) power provided by Class D switch mode power supply
  • 18mm birch plywood vented cabinet with metal grille and recessed handles; the best sound with the best build in its class
  • Internal custom crossover
  • Dual XLR inputs and outputs for mono and stereo applications with daisy-chaining capability; combo connector (XLR+1/4-Inch) on left input
  • Pole-mount receptacles for optional use with pole-mountable mains


The frequency range and crossovers of the Truesonic TSSUB18 and TSSUB15 have been tuned to provide smooth, low-end sound production in the 37Hz-125Hz range (42Hz-125Hz for the TSSUB15). They also offer stereo inputs, an internal active crossover, and are housed in rugged, compact, 18mm Birch plywood cabinets with durable metal recessed handles. When you're ready to extend the frequency range of your live performance reinforcement, Truesonic subwoofers are the effective, economical, and professional choice.

Exacting details were planned and provided in the Truesonic TSSUB18 and TSSUB15. From the modern digital power amp to the internal crossover and handpicked drivers, they are class-leading subwoofers and worthy of the Truesonic name. As active subwoofer systems, The Truesonic TSSUB18 and TSSUB15 offer a massive 18″ LF long-excursion driver and large 15″ LF long-excursion driver respectively. They're rated at a whopping 1200 watts and feature a 3″ copper sandwich voice coil, which means you'll have plenty of low-end volume when you need it most.

Width: 27.75"
Length: 25.5"