Alto Professional TS408 Active Loudspeaker

Alto Professional TS408 — 2,000 W Active PA Speaker for Live Sound

The Alto Professional TS408 is a 2,000-watt powered PA speaker built around an 8-inch low-frequency driver and a 1.4-inch ceramic high-frequency driver. Bi-amped Class D amplification pushes 130 dB peak SPL and reaches down to 52 Hz, so vocals, acoustic sets, and DJ playback sit comfortably in a 100–150 person room. The molded enclosure also doubles as a stage wedge when tilted back on stage.

Bluetooth Streaming, Wireless Stereo Linking, and App-Based DSP

With integrated Bluetooth and True Wireless Stereo, two cabinets can pair in stereo with no cable between them. Using the free Alto App for iOS and Android, you can access four Speaker Use modes, set Custom EQ curves, and select Sub Size, with the option to save your EQ settings directly to the speaker for future gigs. A 5V 2.1A USB charging port on the rear panel keeps a phone or tablet powered during long sets.

Technical Parameters Tuned for Live Sound

The bi-amped Class D platform runs fanless for clean, quiet operation at sustained output. The 2 kHz crossover ensures a smooth handoff between woofer and compression driver.

• Output Power: 2000 W peak (1300 W LF + 700 W HF), 1000 W continuous RMS
• Frequency Range: 52 Hz – 20 kHz (-10 dB) — usable bass extension without a sub in small rooms.
• Maximum SPL: 130 dB peak, 127 dB continuous
• Inputs: (2) XLR+1/4" TRS combo jacks + Bluetooth channel — connect microphones, instruments, or line-level sources directly.
• Dimensions: 436 x 256 x 245 mm — compact footprint for tripod or wedge use.
• Thanks to its 9.4 kg weight, moving this cabinet from car to stage is a one-person job.

Built for Mobile Performers, Small Venues, and Event Hosts

This powered cabinet is a smart pick for solo musicians, mobile DJs, and event hosts who need a single PA to cover a 100–150 person room. Bluetooth streaming and True Wireless Stereo are ideal for ceremonies, conferences, and spoken-word performances where signal cables across the floor are a hassle. The 36 mm pole socket, wedge-monitor angle, and M6 suspension points support different setups for touring bands or houses of worship.

TrueSonic TS4 Series — Designed and Tuned in the USA

TS408 sits inside Alto Professional's TrueSonic TS4 Series, the fourth generation of the company's best-selling powered loudspeaker line. Every TS4 cabinet is designed and tuned in the USA.