The hotline is currently not manned. You can reach us again on Friday, 22.05.2026 at 09:30.
Louder. Clearer. Smarter!
Where the TS3 series exceeded expectations, the TS4 completely redefines them. The TS4 series builds on the legacy of the best-selling TrueSonic speakers, delivering more power, clearer sound, and enhanced Bluetooth® features like streaming, speaker linking, and app control. The new TS4 series is compact, lightweight, and designed for reliability, making it easy to deliver great live sound at any event.
True Sonic Power
Whether you need powerful vocal reinforcement or club-shaking bass for a DJ set, the TS4 speakers deliver loud, clear, room-filling sound for any application. With an 8" woofer and a 1.4" compression driver, the TS408 offers class-leading power and clarity with 2000 watts.
Free Alto App for Remote Setup and Control
The free Alto app, available for both Android and iOS, provides convenient remote control of Bluetooth® levels, speaker usage modes, custom EQ, and sub size selection. Plus, the True Wireless Stereo connection can be configured via the app to save setup time.
Built-In 3-Channel Mixer
Each TS4 features an integrated 3-channel mixer with two mic/line input channels and a dedicated Bluetooth® channel. The mic/line channels have XLR/TRS combo jacks and can be used with microphones, instruments, and line-level signals without extra hardware or settings. Just plug in at the rear and you’re ready to go.
Easy Bluetooth® Streaming and Speaker Pairing
The TS4 is the ideal high-power streaming solution. Thanks to built-in Bluetooth® connectivity, you can easily pair your laptop, phone, or tablet and enjoy music in no time. The True Wireless Stereo feature lets you wirelessly transmit Bluetooth® audio signals in perfect stereo to two TS4 speakers without cables.
DSP Modes for Optimal Sound in Any Setting
With the TS4’s three preset "Speaker Use" modes, you can optimize the speaker for any application, ensuring great sound at the push of a button. For even more control over your tone, configure a custom EQ in the Alto app and remotely adjust settings from anywhere in the venue. You can even save your preferred custom EQ directly on the TS4 for quick recall.
Versatile and Reliable
From premium drivers to fanless Class-D amplifiers, every aspect of the TS4 series is engineered for maximum reliability, whether for mobile gigs, performances, or permanent installations. Each speaker features a lightweight, sleek black-box design that can be used freestanding, as a wedge monitor, mounted on a stand, or flown using the built-in mounting points.
Level up your live sound!
Features
- 2000 watts for powerful performance
- Alto app (iOS/Android) for remote setup and control
- Bluetooth audio streaming directly from the unit
- Built-in DSP with 4 speaker usage modes (including custom EQ via app)
- True Wireless Stereo speaker linking via Bluetooth
- Integrated 3-channel mixer with two XLR/TRS combo inputs, mic/line switch, and independent level controls
- XLR mix output, controls for speaker use and sub size
- 8" woofer with 2.0" high-temperature voice coil
- 1" tweeter with 1.4" voice coil
- Lightweight enclosure for easy transport, setup, and installation
- Versatile design – stand mounting, floor monitor, or flown application with built-in M6 mounting points
- Powerful and efficient fanless Class-D amplifiers for cleaner, quieter operation and higher long-term reliability
- Designed in the USA
Technical Specifications
- Output power: 2000 watts
- Woofer: 8.0" driver, 2.0" (50 mm) high-temperature voice coil. 1x 650 W RMS @ 2 Ohms
- Tweeter: 1.0" exit ceramic driver with 1.4" (35 mm) voice coil. 1x 350 W @ 4 Ohms
- Crossover frequency: 2 kHz
- Maximum sound pressure level: 130 dB (peak), 127 dB (continuous) (dB SPL @ 1 m)
- Frequency range: 52 Hz - 20 kHz (-10 dB)
- Coverage angle: 90° horizontal x 60° vertical (nominal)
- Connections: 2x XLR/TRS combo inputs (balanced), 1x XLR output (left), 1x IEC power cable input
- Line input impedance: 10 kOhm balanced, 20 kOhm unbalanced; Mic: 1.2 kOhm
- Line gain/volume control range: -8 to 0 dB, +4 dBu nominal, +10 dBu max output
- Mic/instrument gain/volume control: -8 to +50 dB
- USB charging port: 5V 2.1 A
- Controls:
- Power switch
- 2x gain knobs
- 2x mic/line switches
- Bluetooth volume control
- Pairing button
- Stereo link button
- Sub size button
- Speaker use button - Indicators: Input channel signal/limit/clip LED (green = signal) (yellow = limiter) (red = clipping)
- Bluetooth LED (blue)
- Link LED (orange)
- 4x DSP presets LED (green)
- 3x sub size LED (green) - Power connection: IEC
- Voltage: 100-120V, 50/60Hz; 220-240V, 50-60Hz
- Power consumption: 900 watts
- Fuse: 100-120V T10AL AC250V; 220-240V T5AL AC250V
- Protection: Electronic clip, thermal protection, and converter overload protection
- Enclosure: Injection-molded housing and perforated metal grill
- Mounting/installation: Standard 36 mm speaker flange, flown application, hung with built-in M6 points or as wedge monitor
- Operating temperature: -10 °C to 45 °C
- Dimensions (HxWxD): 436 x 256 x 245 mm
- Weight: 9.4 kg
Scope of delivery
- 2 x Alto TS408 active speakers
- 2 x power cables
- 2 x software download cards
Specification
- Product number 00090091
- Weight in kg 9,4
- Power RMS (Watts) 4000
- Subwoofers 8 Zoll
- Microphone input Yes, without phantom power
- Outputs XLR
- Multifunctional chassis Yes
- Speakers full range -
- Inputs 6.3mm Klinke, Bluetooth, XLR
- Tweeters 1 Zoll
- Speakers mid range -
- Colour Black
Reviews
| 5 Stars |
|
7 |
| 4 Stars |
|
1 |
| 3 Stars |
|
0 |
| 2 Stars |
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0 |
| 1 Star |
|
0 |
A verification of the ratings has taken place as follows: Only customers who are registered in our online store and have actually purchased the product from us can submit a rating for the item in the customer account.
This rating has been translated automatically. Original language
However, the wattage specifications on the speakers suggest more power than actually comes out. Unfortunately, I have not yet found a logical explanation for this anywhere.
But anyway, I give it four stars. Let's see how they perform in live operation.
This rating has been translated automatically. Original language
Variant Alto TS412 Stereo Set
This rating has been translated automatically. Original language
Variant Alto TS412 Stereo Set
This rating has been translated automatically. Original language
Variant Alto TS410 Stereo Set
This rating has been translated automatically. Original language
All in all, I am very satisfied!
Questions about product
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Financing
easyCredit Ratenkauf
- 2 to 60 months term
- Financing from 21,00 € / month
- More information about installment purchase
ConsorsFinanz Finanzierung
- 6 to 72 months term
- 0% financing for 47,91 € per month
- More information on financing
| Operating instructions / manual |
| 3 Year warranty | |
| 30 Day Money Back | |
| Price Match Guarantee | |
| Over 2.000.000 satisfied customers |
The hotline is currently not manned. You can reach us again on Friday, 22.05.2026 at 09:30.
| Friday | 09:30 - 18:00 | |
| Saturday | 09:30 - 13:30 | |
| Monday | Closed |
Different opening times |
| Tuesday | 09:30 - 18:00 | |
| Wednesday | 09:30 - 18:00 | |
| Thursday | 09:30 - 18:00 |