Alto Professional

TS408 2000-Watt Speaker Pair

Alto Professional TS408 pair
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Alto Professional

TS408 2000-Watt Speaker Pair

Grab a pair of Alto Professional TS408 speakers and make your next event Louder, Clearer & Smarter. With 2000W of efficient class D amplification the TS408 are the most powerful speaker in their class. They're also the smartest with advanced Bluetooth functions including streaming, speaker linking and App control. Compact, lightweight, and designed for reliability, the new TS408 makes it simple to get great live sound at every event.

  • 2000W for powerful performance 
  • Bluetooth® audio streaming direct from device 
  • On-board DSP with 4 Speaker Use modes (inc. Custom via App) 
  • Wireless control via the free Alto App for iOS and Android 
  • True Wireless Stereo linking via Bluetooth® 
  • Integrated 3-channel mixer with dual XLR 1⁄4-inch combo inputs, mic/line switches and independent level controls 
  • XLR Mix output, Speaker Use, and Sub Size Controls 
  • Lightweight enclosure for easy transport, set up and installation 
  • Versatile design - pole-mountable, wedge monitor, bracket installation or flown application with integral suspension points 
  • Powerful and efficient class D amplifiers with fanless cooling design to run cleaner, quieter and with greater long-term reliability 
  • Designed and tuned in the USA 
  • Key Features

    True Sonic Power

    Whether you need a powerful vocal PA or club-shaking bass performance for a DJ set, TS4 speakers deliver loud, clear, room-filling sound for any application. With a 8-inch woofer, and a 1.4-inch compression driver, TS408 delivers 2000W of class-leading power and clarity in equal measure.

    FREE Alto App for remote configuration and control

    Available free for both Android and iOS, the Alto App gives hands-on remote control over Bluetooth levels, Speaker Use Modes, Custom EQ and Sub Size selection. Further, True Wireless Stereo linking can be configured remotely via the app to save time during setup.

    Alto TS4 series app control

    Video Poster

    Built-In 3-channel mixer

    Every TS4 features an integrated 3-channel mixer, with two Mic/Line input channels and a dedicated Bluetooth channel. The Mic/Line channels feature XLR/TRS combo jacks and can be used with microphones, instruments, and line-level signals without the need for additional hardware or adjustment. Just plug straight into the rear panel and you’re up and running.


    Simple Bluetooth Streaming & Speaker Linking

    The ideal high-powered streaming solution, TS4’s built-in Bluetooth connectivity makes it easy to pair your laptop, phone or tablet and get the music pumping in no time at all. With the True Wireless Stereo function you can stream Bluetooth audio to two TS4 speakers in perfect stereo without the need for any cables.

    DSP Modes for the best sound in every application

    TS4’s three preset “Speaker Use” modes let you optimize the speaker for any application, so you’ll get great sound every time at the touch of a button. For even more control over your sound, you can configure a Custom EQ within the Alto App and remote adjust the settings from any listening point in the venue. You can even save your favourite Custom EQ setting direct to the TS4 for easy recall whenever you need it.

    Versatile and Reliable

    From the high-quality drivers to the fanless class D amplifiers, every aspect of the TS4 Series has been designed for superb reliability, whether used for mobile gigs and performances or fixed installation. Each speaker features a lightweight, sleek, black box design that can be used as the application demands - freestanding, as a wedge monitor, pole-mounted or suspended via the integrated suspension points.

  • Specifications

    Output Power: 2000W

    Low-Frequency: 8.0” driver, 2.0” (50 mm) high-temperature voice coil. 1 x 650 W RMS @ 2 Ω.

    High-Frequency: 1.0” exit ceramic driver with 1.4” (35 mm) coil. 1 x 350 W @ 4 Ω.

    Crossover Frequency: 2 kHz

    Maximum SPL: 130 dB (peak), 127 dB (continuous) (dB-SPL @ 1 m)

    Frequency Response: 62 Hz – 20 kHz (+/- 3 dB)

    Frequency Range: 52 Hz – 20 kHz (-10 dB)

    Horn Coverage: 90° horizontal x 60° vertical (nominal)


    • (2) XLR+1/4” (6.35 mm) TRS combo inputs (Balanced) 
    • (1) XLR output (Link)
    • (1) IEC power cable input

    Input Impedance Line: 10 KΩ balanced, 20 KΩ unbalanced, Mic: 1.2K 

    Line Gain/Volume Control Range: -∞ to 0 dB, +4 dBu nominal, +10 dBu for max output 

    Mic/Inst. Gain/Volume Control Range: -∞ to +50 dB USB 

    Charging Port: 5V 2.1A 

    Controls: Power switch, (2) gain control knobs (1 per input), (2) Mic/Line switches, Bluetooth volume control encoder, Pairing button, Stereo Link button, Sub Size button, Speaker Use button 


    • (1) Input Channel Signal/Limit/Clip LED (Green = Ch1/2 Signal) (Yellow = Ch1/2 Limiter) (Red = Ch1/2 Output Clipped) 
    • (1) Bluetooth LED (Blue) 
    • (1) Link LED (Orange) 
    • (4) DSP Presets LED (Green) 
    • (3) HPF LED (Green)

    Power Connection: IEC 

    Voltage: 100-120V, 50/60Hz; 220-240V, 50-60Hz 

    Consumption: 900W 

    Fuse: 100-120V T10AL AC250V; 220-240V T5AL AC250V 

    Protection: Electronic clip, thermal, and transducer overdrive protection 

    Enclosure: Injected Moulded Enclosure and Perforated Metal Grille 

    Mounting/Installation: Standard 36 mm pole socket, flown application with integral M10 suspension points, or in a wedge monitor position 

    Operating Temperature: 10°C to 45°C (14°F to 113°F) 

    Dimensions (height x width x depth): 17.2” x 10.1” x 9.6” / 436 x 256 x 245 mm 

    Weight: 20.7 lbs. / 9.4 kg

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