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 and offers more power, clearer sound and expanded Bluetooth features like streaming, speaker linking and app control. The new TS4 series is compact, lightweight and engineered 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 a 15" woofer and a 1.4" compression driver, the TS415 delivers class-leading power and clarity with 2500 watts.
Free Alto App for Remote Configuration and Control
The free Alto App, available for both Android and iOS, provides convenient remote control of Bluetooth levels, speaker use modes, the custom EQ and sub-size selection. The True Wireless Stereo link can also 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 use XLR/TRS combo jacks and accept microphones, instruments and line-level signals without additional 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. With built-in Bluetooth connectivity you can quickly pair your laptop, phone or tablet and enjoy music in seconds. The True Wireless Stereo feature lets you transmit Bluetooth audio to two TS4 speakers in perfect stereo without cables.
DSP Modes for the Best Sound in Every Application
With the TS4’s three preset "Speaker Use" modes, you can optimize the speaker for any application, so you get 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 high-quality drivers to fanless Class-D amps, every aspect of the TS4 series is built for maximum reliability—whether for mobile gigs and performances or fixed installations. Each speaker features a lightweight, slim black-box design that can be used in multiple ways: pole-mounted, as a wedge monitor, on a stand or flown via the integrated suspension points.
Speaker Stand
The 21454 speaker stand from König & Meyer is a versatile aluminum stand with compact dimensions. The special stand’s height adjustment ranges from 99 to 143 cm. With the right accessories the unique stand is also suitable for heavy studio monitors and other applications. The short transport length, small footprint and durable powder coating are practical advantages.
Level up your live sound!
Features
Speakers
- 2500 Watt for powerful performance
- Alto App (iOS/Android) for remote configuration and control
- Bluetooth audio streaming directly from the device
- Built-in DSP with 4 speaker use 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
- 15" 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 - pole-mount, floor monitor or flown application with integrated M10 suspension points
- Powerful, efficient Class-D amplifiers with fanless cooling for cleaner, quieter operation and greater long-term reliability
- Designed in the USA
Technical Specifications
- Output Power: 2500 Watt
- Woofer: 15.0" driver, 2.5" (63 mm) high-temperature voice coil. 1 x 800 W RMS @ 2 Ohm
- High-frequency driver: 1.0" exit ceramic driver with 1.4" (35 mm) voice coil. 1 x 450 W @ 4 Ohm
- Crossover Frequency: 2 kHz
- Maximum Sound Pressure Level: 135 dB (peak), 132 dB (continuous) (dB-SPL @ 1 m)
- Frequency Range: 33 Hz - 20 kHz (-10 dB)
- Coverage Angle: 90° horizontal x 60° vertical (nominal)
- Connections: 2 x XLR/TRS combo inputs (balanced), 1 x XLR output (Link), 1 x IEC power input
- Input Impedance Line: 10 kΩ balanced, 20 kΩ unbalanced; Mic: 1.2 kΩ
- Line gain/volume control range: -8 to 0 dB, +4 dBu nominal, +10 dBu for maximum output
- Mic/instrument gain/volume control: -8 to +50 dB
- USB charging port: 5V 2.1 A
- Power Connection: IEC
- Voltage: 100-120V, 50/60 Hz; 220-240V, 50/60 Hz
- Power Consumption: 900 Watt
- Fuse: 100-120V T10AL AC250V; 220-240V T5AL AC250V
- Protection: Electronic clip, thermal protection and driver overload protection
- Enclosure: Molded cabinet and perforated metal grille
- Mounting/Installation: Standard 36 mm speaker flange, flown application, suspended using integrated M10 points or used as a wedge monitor
- Operating Temperature: -10 °C to 45 °C
- Dimensions (HxWxD): 643 x 418 x 402 mm
- Weight: 17.2 kg
Speaker Stand
- K&M speaker stand
- Product category: Topline
- Type: 21454
- Lightweight stand
- Extremely low minimum height
- Single-stage extendable
- Base construction: foot tubes with support braces
- Height adjustment: clamp screw & push-button system
- Height adjustable from 99 to 143 cm
- Tube end Ø: 35 mm
- Load capacity: max. 30 kg (with centered load on a level surface, without lateral forces such as wind, shocks, etc.)
- Material: Aluminum
- Weight: 1.8 kg
- Color: Black
Scope of delivery
- 2 x Alto TS415 speakers
- 2 x speaker stands
Specification
- Product number 00097451
- Speakers mid range -
- Power RMS (Watts) 5000
- Subwoofers 15 Zoll
- Colour Schwarz
- Weight in kg 17,2
- Multifunctional chassis Ja
- Microphone input Ja, ohne Phantomspeisung
- Outputs XLR
- Tweeters 1 Zoll
- Speakers full range -
- Inputs 6.3mm Klinke, Bluetooth, XLR
Reviews
Questions about product
No questions have yet been asked about this article.
Financing
easyCredit Ratenkauf
- 2 to 60 months term
- Financing from 22,00 € / month
- More information about installment purchase
ConsorsFinanz Finanzierung
- 6 to 72 months term
- 0% financing for 81,25 € per month
- More information on financing
