Alto Professional TS18S – 18″ Powered Subwoofer with 2,500 W Peak Power & DSP Control

The Alto Professional TS18S delivers earth-shaking low-end in a rugged, road-ready design. Powered by a Class D amplifier and an 18″ high-temperature voice coil driver, it provides clear, powerful bass with DSP tuning options and phase alignment to perfectly integrate with your PA setup.

Key Features

• 2,500 W peak Class D amplifier: Robust power output delivers deep, punchy bass for large venues
• 18″ woofer with 3″ high-temp voice coil: Handles heavy low frequencies with durability and precision
• User-selectable EQ modes: Switch between Off, Live, and DJ presets for tailored low-end response
• Phase alignment switch: Choose between 0°, 90°, 180°, or 270° for optimal sub integration
• Durable construction: Internally braced, front-ported MDF cabinet with mark-resistant splatter finish
• Advanced protection features: Electronic clip, thermal, and transducer overdrive safeguards to protect the speaker
• Convenient connectivity: Two combo XLR/¼″ inputs, two XLR thru outputs, and integrated 36 mm pole socket

Customer Benefits

Whether you're powering a club, stage, or event, the TS18S ensures solid, commanding bass that can be finely tuned to match your setup. Its rugged build, flexible input options, and intuitive DSP controls make it ideal for consistent, high-impact performance every time.

Quick Specs

• Dimensions: 67.8 × 53.1 × 62.7 cm
• Weight: ≈42.2 kg
• Power: 2,500 W peak (Class D)
• Driver: 18″ woofer with 3″ high-temperature voice coil
• Frequency range: 27 Hz–111 Hz (–10 dB); 29 Hz–100 Hz (–3 dB)
• Max SPL: 137 dB (peak)
• Connectivity: 2 combo XLR/¼″ inputs, 2 XLR outputs (thru), IEC power input

What’s in the Box

• Alto Professional TS18S powered subwoofer
• IEC power cable
• Quick Start Guide & warranty information

Use Cases / Ideal For

Ideal for DJs, live sound engineers, houses of worship, and event producers who need deep, controllable bass from a reliable, professional subwoofer.

Compatibility

Works seamlessly with full-range PA systems and powered tops via XLR/¼″ inputs and thru outputs. Mounts easily using the integrated pole socket; optimized performance via DSP EQ and phase alignment.

Pros & Cons

✅ Pros:

• Powerful, precise low-end response with 2,500 W power and 18″ driver
• Customizable EQ and phase alignment for seamless integration
• Rugged MDF build with durable finish—built for the road
• Robust protection systems ensure longevity under heavy use

⚠️ Cons:

• Heavy and bulky—not ideal for ultra-light mobile setups
• No built-in wireless or digital processing—relies on physical DSP and switches

The Alto Professional TS18S is a commanding powerhouse of bass reinforcement—designed for durability, control, and impact in professional settings.