The hotline is currently not manned. You can reach us again on Wednesday, 20.05.2026 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 performance for a DJ set, the TS4 speakers deliver loud, clear, room-filling sound for any application. With a 12" woofer and a 1.4" compression driver, the TS412 delivers class-leading power and clarity with 2500 watts.
Free Alto App for Remote Setup and Control
The free Alto app, available for both Android and iOS, offers 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 start playing.
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. With True Wireless Stereo, Bluetooth® audio signals can be transmitted in perfect stereo to two TS4 speakers without any cables.
DSP Modes for Optimal Sound in Any Setting
With 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 sound, you can 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 setting directly on the TS4 for easy recall.
Versatile and Reliable
From premium drivers to fanless Class-D amplifiers, every aspect of the TS4 series is designed for maximum reliability, whether for mobile gigs, performances, or fixed installations. Each speaker features a lightweight, sleek black-box design that can be used freestanding, as a wedge monitor, on a stand, or flown using the built-in hanging points.
Level up your live sound!
Features
- 2500 watts for powerful performance
- Alto app (iOS/Android) for remote setup and control
- Bluetooth audio streaming directly from the device
- 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
- 12" woofer with 2.5" 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 M10 hanging 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: 2500 watts
- Woofer: 12.0" driver, 2.5" (63 mm) high-temperature voice coil. 1x 800 W RMS @ 2 Ohm
- Tweeter: 1.0" exit ceramic driver with 1.4" (35 mm) voice coil. 1x 450 W @ 4 Ohm
- Crossover frequency: 2 kHz
- Maximum sound pressure level: 132 dB (peak), 129 dB (continuous) (dB-SPL @ 1 m)
- Frequency range: 44 Hz – 20 kHz (-10 dB)
- Coverage angle: 90° horizontal x 60° vertical (nominal)
- Connections: 2x XLR/TRS combo input (balanced), 1x XLR output (left), 1x IEC power cable input
- Input impedance line: 10 kOhm balanced, 20 kOhm unbalanced, mic: 1.2 kOhm
- Line gain/volume control range: -8 to 0 dB, +4 dBu nominal, +10 dBu maximum 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 driver overload protection
- Enclosure: molded enclosure and perforated metal grill
- Mounting/installation: standard 36 mm speaker flange, flown application, hung with built-in M10 points or as wedge monitor
- Operating temperature: -10 °C to 45 °C
- Dimensions (HxWxD): 607 x 354 x 351 mm
- Weight: 15 kg
Scope of delivery
- 2 x Alto TS412 active speakers
- 2 x power cables
- 2 x software download cards
Suitable accessories (Not included in the delivery.)
Specification
- Product number 00090094
- Weight in kg 15
- Power RMS (Watts) 5000
- Subwoofers 12 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 |
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7 |
| 4 Stars |
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1 |
| 3 Stars |
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0 |
| 2 Stars |
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0 |
| 1 Star |
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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
This rating has been translated automatically. Original language
This rating has been translated automatically. Original language
Fits very well together but also alone without sub offer these in "DJ mode" a blatant bass.
The only thing that is not so 100% pointed out is that if the two boxes are paired via Bluetooth, that then as a playback source also only Bluetooth are used eg the cell phone.
I had thought I can pair the two and use as input my mixer, which is connected via XLR. Unfortunately, this is not so.
Find that with the Bluetooth still ingenious. Brauchst only power and can start immediately.
This rating has been translated automatically. Original language
Variant Alto TS408 Stereo Set
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.
Questions about product
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Financing
easyCredit Ratenkauf
- 2 to 60 months term
- Financing from 20,10 € / month
- More information about installment purchase
ConsorsFinanz Finanzierung
- 6 to 72 months term
- 0% financing for 56,75 € 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 Wednesday, 20.05.2026 at 09:30.
| Tuesday | 09:30 - 18:00 | |
| Wednesday | 09:30 - 18:00 | |
| Thursday | 09:30 - 18:00 | |
| Friday | 09:30 - 18:00 | |
| Saturday | 09:30 - 13:30 | |
| Monday | Closed |
Different opening times |




