Alto TS15S | 15in - 132dB | 2500W Powered Subwoofer with DSP & Phase Control

ALTO TS15S  (Alto TS-15S)

Powered Subwoofer

Alto TS15S is a powerful 15-inch powered subwoofer designed to enhance any full-range PA system with deep, defined low-end performance. With 2500 watts of peak power and user-configurable EQ and phase settings, it's built for professional sound reinforcement in clubs, venues, mobile rigs, and installations.

Alto TS15S Competitive Differences

• 2500W peak power with 132dB SPL and 15-inch driver
• User-selectable EQ modes and 4-position phase alignment

Alto TS15S Description

The Alto TS15S is engineered to deliver punchy, room-filling bass that complements your top cabinets and elevates the overall sound experience. Its 15-inch woofer features a 3-inch high-temperature voice coil, housed in a rugged, front-ported MDF enclosure that minimizes unwanted resonance while maximizing impact and clarity. Perfect for live performance venues, nightclubs, houses of worship, or portable event systems, the TS15S is Alto Professional’s most powerful sub to date. Its high-efficiency Class D amplifier delivers clean, powerful output with headroom to spare—reaching a maximum SPL of 132dB. Onboard DSP provides three EQ tuning modes—Off, Live, and DJ—to adapt the low-frequency output to your specific needs. The Phase Alignment switch offers four positions (0°/90°/180°/270°), making it easy to blend the sub with any full-range setup for maximum clarity and impact. Built for real-world use, the cabinet includes a 36 mm pole socket for mounting satellite speakers and is finished in a durable, mark-resistant coating that stands up to heavy use. Rear-panel combo inputs and XLR link outputs offer flexible connection options, while built-in protections ensure long-term reliability.

Model Features

• 2500W peak Class D amplification
• 15-inch woofer with 3-inch high-temp voice coil
• Max SPL: 132dB for high-output low-end performance
• Precision DSP with selectable EQ modes: Off, Live, DJ
• Phase alignment switch: 0°, 90°, 180°, 270°
• (2) Combo XLR/TRS inputs and (2) XLR thru outputs
• Rugged MDF cabinet with internal bracing and 36mm pole socket
• Mark-resistant finish and integrated handle for portability
• Electronic protections: clip, thermal, and overdrive

Model Specifications

• Max SPL: 132dB (@1m)
• Power Output: 2500W peak
• Frequency Response: 36 Hz – 110 Hz (-3 dB)
• Frequency Range: 31 Hz – 123 Hz (-10 dB)
• Driver: 15in (381 mm) woofer with 3in (76.2 mm) voice coil
• Dimensions: 21.3 x 20.6 x 24.7 in (541 x 523 x 627 mm)
• Weight: 87.1 lb (39.5 kg)

What's In The Box

• Alto TS15S subwoofer
• Power cable
• Quick start guide