New TS315S and TS318S powered subwoofers provide amazing bass reinforcement for the best-selling TS3 family of full-range commercial powered loudspeakers.

Cumberland, RI USA (May 7, 2019)—Alto Professional (, the world’s leading innovator for live performance sound reinforcement products, today announced the introduction of their TS3 family of high-powered subwoofers, the TS315S and TS318S. The new subwoofers extend the bass response of Alto Professional’s highly-successful line of TS3 full-range speakers, resulting in systems with stunning wide-range response characterized by dramatic, impactful low frequencies and soaring, transparent midrange and highs.

There are times when even the best sound systems need additional low-frequency output and “punch.” For those situations, Alto Professional offers their new TS/315S/318S powered subwoofers. These subwoofers extend the bass response of virtually any full-range speaker, relieving that speaker of the difficult task of having to reproduce the low bass frequencies. When using these new subwoofers, the listening audience will hear everything with perfect clarity, from the lowest bass synth tones to the highest percussion bells and everything in between.

Both subwoofer models feature a rugged, long-excursion woofer mounted in a solidly-braced ported enclosure, computer-optimized for powerful low-frequency performance. The enclosures themselves are made from a dense wood composite. This strong, resonant-free material has virtually perfect acoustic characteristics, which ensures that the subwoofers’ output is always clear and impactful. Conventional enclosures with flex-prone thin metal or plastic walls actually rob the speaker of acoustic impact by dissipating the driver’s energy as cabinet vibration. A sturdy, braced wood composite enclosure doesn’t waste the driver’s motion as cabinet resonance.

Strong, clear output is only half the battle, however. In order for a subwoofer to be part of an ideal speaker system, it has to blend seamlessly with the companion speaker. Here, Alto Professional TS300-series subwoofers excel like none other. These subwoofers have a choice of six selectable DSP output modes, so the subwoofer’s frequency response and crossover frequency are perfectly matched to the speaker it’s being used with. Four of these six output options match the subwoofer perfectly with Alto TS2 and TS3 full-range speakers, while the other four output options ensure a perfect match even with non-Alto full-range speakers. For the ultimate in system configuration flexibility, users can also choose Hi-Pass or Bypass mode.

Alto Professional’s computer design techniques feature advancements such as Finite Element Analysis (FEA), which enables them to optimize the speaker’s magnetic structure and maintain a tight voice coil gap for maximum sensitivity. Alto’s voice coils themselves have extremely tight windings that ensure maximum utilization of the input signal and the adhesives exhibit unrivaled consistency and durability under high temperature conditions for unsurpassed system reliability. Both subwoofers have an on-board 2000-watt amplifier (1000 watts continuous) with proprietary limiting circuitry that provides electronic clip, thermal and transducer overload protection, ensuring that the system always sounds clean and clear, no matter how hard it’s pushed.

  • Driver: 15-inch (TS315S) or 18-inch (TS318S) with high-temperature, long-throw voice coil
  • Amplifier: 1000w continuous, 2000w peak Class D power
  • XLR outputs, with six discreet output modes for ideal matching with companion speaker
  • Extended LF switch for increased EQ control
  • Electronic clip, thermal and transducer overdrive protection
  • Integrated 35mm pole socket
  • M10 suspension points
  • Rugged, mar-resistant splatter-spray finish always looks good, even with heavy use
  • Designed and tuned in the USA

“Alto Professional has a well-earned reputation as one of the world’s leading professional sound reinforcement companies,” said Pyotr Belov, Product Manager for Alto Professional. “Our new TS3 powered subwoofers set a new benchmark in this category for powerful low-frequency performance coupled with outstanding utility/installation versatility. These subwoofers are exactly what people have been waiting for.”

U.S. Pricing will be as follows: TS315S $499 ea. TS318S $599 ea.

They will be available Q2 2019.


About Alto Professional
Established in 2000, Alto Professional ( manufactures a full line of world-class Live Performance Reinforcement equipment. Using modern manufacturing techniques, cutting-edge DSP technology, and sophisticated design, Alto Professional’s products are precision-engineered to provide both exceptional performance and exceptional value for performing musicians and live sound engineers. Alto Professional is a member of the premier family of brands known as inMusic (