L-TRONIK T-4240MP - 4x240W Multi-Channel Amplifier with 4x4 Matrix, MP3/USB/SD Player and Tuner

L-TRONIK T-4240MP - 4x240W Multi-Channel Amplifier with 4x4 Matrix, MP3/USB/SD Player and Tuner

The L-TRONIK T-4240MP is a 4-channel (4x240 W) multi-zone PA amplifier with a 4x4 matrix that allows any of its sources to be assigned to each output zone independently. Designed for professional installations (hotels, restaurants, sports centers, retail or corporate buildings), it integrates an MP3 player on the front panel (reading via USB and SD card ) and a radio tuner , so it can operate as a standalone source without external equipment. Each input channel has dedicated volume, bass and treble controls , and the front panel incorporates level metering and control per zone for quick and precise adjustment.

In terms of connectivity, it offers 3 Combo Mic/Line inputs with selectable 48 V phantom power , 2 stereo line inputs (RCA) , a TEL/Paging input for telephony, an RJ-45 for a remote microphone (compatible with T-4012 paging), and an RS-232 port for integration with control systems. Priority logic is configurable (MIC1/TEL/REMOTE) via a dedicated terminal, and it has an integrated monitor output (1 W) with a zone selector for local listening.

The four power amplifiers deliver 70 V, 100 V, or 4 Ω of signal per channel (terminal selectable) and include balanced/unbalanced line outputs per zone for connecting external power amplifiers. The 19"/3U chassis offers a universal 110–230 V power supply , a maximum power consumption of 1,200 W , and a comprehensive protection package (thermal, short-circuit, overload, and clipping ), as well as a Ground Lift switch to minimize hum.

Main features

• Power: 4×240 W real in 4 independent channels.
• 4×4 matrix: free assignment of any of the sources to each of the four zones.
• Built-in sources: MP3 player (USB/SD) and radio tuner on the front panel.
• Inputs: 3× Combo Mic/Line with 48 V phantom + 2× stereo line (RCA) + TEL/Paging + RJ45 for remote microphone.
• Control: Independent volume, bass, and treble for each input channel; meters and level for each zone on the front panel.
• Outputs per channel: 70 V / 100 V / 4 Ω (do not use more than one at a time) and balanced/unbalanced line output per zone.
• Local monitor: 1 W with zone selector for rack verification.
• Integration: RS-232 port for third-party control and switchable priority logic (MIC1/TEL/REMOTE).
• Protections: thermal, short circuit, overload and clip ; Rear ground lift .
• Chassis: 19” / 3U; Dimensions: 484 × 399 × 132 mm; Weight: 18 kg.

Benefits for sound systems projects

• Complete zone flexibility : route music, announcements, or phone calls to each area independently.
• Less external hardware : Integrated sources (USB/SD/FM) reduce equipment, wiring and breakdowns.
• Secure Operation : Configurable priorities to ensure paging and emergencies are always heard.
• Universal compatibility : 70/100 V and 4 Ω outputs, and line outputs for expansion with more stages.
• Easy maintenance : 1W monitor and zone measurement for quick on-site diagnostics.

Use cases

• Hotels and hospitality : ambient music by floor and reception or security messages.
• Restaurants and retail : areas with unique music and notifications at the checkout/counter.
• Sports and educational centers: courts, hallways, and changing rooms with selective calling.
• Corporate buildings and coworking spaces: PA systems by zone and emergency phone calls.

Frequently Asked Questions

• Can I mix 70/100V and 4 Ω outputs? Yes, you can choose 70V, 100V, or 4 Ω per channel , but only one option at a time in each zone.
• What remote microphone does it support? The RJ45 port supports T-4012 for zone paging .
• Is the phantom power switchable? Yes, the Combo Mic/Line inputs allow you to activate 48V phantom power when using condenser microphones.
• Does it include external control? It has RS-232 for integration with AV/Building control systems.

Installation and good practices

• Dimension the load per channel and choose one output terminal (70 V / 100 V / 4 Ω) per zone.
• Use specific wiring for 100V lines and respect the polarity and COM per channel.
• Activate the appropriate priority (TEL/MIC1/REMOTE) according to the facility's emergency plan.
• To minimize hum, use the Ground Lift switch if necessary.

Description for projects

4-zone 4×240 W multichannel amplifier with 4×4 matrix , USB/SD MP3 player and tuner . Inputs: 3× Mic/Line (Combo) with 48 V phantom , 2× RCA line , TEL/Paging , RJ45 for remote microphone, RS-232 . Outputs per channel: 70 V / 100 V / 4 Ω plus balanced/unbalanced line output . 1 W monitor with zone selector. Response 80 Hz–16 kHz (0/-3 dB), S/N ≥65 dB, THD ≤1 %. Power supply 110–230 V, consumption 1,200 W. 19”/3U chassis (484 × 399 × 132 mm), 18 kg . Protections: thermal, short circuit, overload and clipping ; Ground Lift .