The Alto TS408 2000-Watt 8-Inch 2-Way Powered Loudspeaker with Bluetooth is perfect for anyone who wants great sound without compromising on style. This speaker packs a powerful 2000W punch and comes with the free Alto App for easy remote configuration and control. With Bluetooth audio streaming, you can enjoy your music wirelessly from any compatible device.
The on-board DSP provides four speaker use modes, including custom EQ, so you can tailor the sound to your specific needs. Plus, the True Wireless Stereo speaker linking via Bluetooth makes it easy to expand your sound system. The integrated 3-channel mixer with dual XLR ¼-inch combo inputs, mic/line switches, and independent level controls complete this versatile package.
Louder. Clearer. Smarter.
Where TS3 exceeded expectations, TS4 redefines them completely.
Building on the legacy of the best-selling TrueSonic speakers, the TS4 Series delivers increased power, clearer sound, and advanced Bluetooth functions including streaming, speaker linking, and App control.
Compact, lightweight, and designed for reliability, the new TS4 Series makes it simple to get great live sound at every event.
Level up your live sound. Choose Alto Professional’s TS4 Series.
Tech information
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Output Power: 2000 W
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Low-Frequency Driver: 8.0” driver, 2.0” (50 mm) high-temperature voice coil. 1 x 650 W RMS @ 2 Ω.
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High-Frequency Driver: 1.0” exit ceramic driver with 1.4” (35 mm) coil. 1 x 350 W @ 4 Ω.
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Crossover Frequency: 2 kHz
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Maximum SPL: 130 dB (peak), 127 dB (continuous) (dB-SPL @ 1 m)
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Frequency Response: 62 Hz – 20 kHz (+/-3 dB)
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Frequency Range: 52 Hz – 20 kHz (-10 dB)
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Horn Coverage: 90° horizontal x 60° vertical (nominal)
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Connectors: (2) XLR+1/4” (6.35 mm) TRS combo inputs (Balanced), (1) XLR output (Link), (1) IEC power cable input
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Input Impedances - Line: 10 KΩ balanced, 20 KΩ unbalanced, Mic: 1.2K
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Line Gain/Volume Control Range: -∞ to 0 dB, +4 dBu nominal, +10 dBu for max output
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Mic/Inst. Gain/Volume Control Range: -∞ to +50 dB
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USB Charging Port: 5V 2.1A
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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
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Indicators: (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)
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Power Connection: IEC
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Voltage: 100-120V, 50/60Hz; 220-240V, 50-60Hz
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Consumption: 900W
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Fuse: 100-120V T10AL AC250V; 220-240V T5AL AC250V
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Protection: Electronic clip, thermal, and transducer overdrive protection
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Enclosure: Injected Molded Enclosure and Perforated Metal Grille
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Mounting/Installation: Standard 36 mm pole socket, flown application, suspended with integral M6 points, or in a wedge monitor position
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Operating Temperature: -10°C to 45°C (14°F to 113°F)
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Dimensions: (height x width x depth) 17.2” x .10.1” x 9.6 / 436 x 256 x 245 mm
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Weight: 20.7 lbs. / 9.4 kg
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 an 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. Download for Android Download for iOS
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 remotely adjust the settings from any listening point in the venue. You can even save your favorite Custom EQ setting directly 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.
