Contacta IR-TX4 – 2 Channel Large Area Infrared Transmitter with Modulator, 900m² Coverage

The Contacta IR-TX4 is a powerful two-channel large area infrared transmitter with modulator, designed to deliver crystal-clear audio coverage across spaces up to 900m². With 2 microphone inputs and 2 line inputs, the IR-TX4 ensures flexible connectivity for a wide range of audio sources. Its wide-angle infrared signal and sleek, wall or ceiling mountable design make it an ideal solution for professional environments where clear sound distribution is essential.

Multiple IR-TX4 transmitters can be linked together to increase coverage, making it suitable for large venues such as theatres, lecture halls, conference rooms, and places of worship. Unlike the IR-TX2 model, the IR-TX4 is specifically built for larger spaces and offers higher power performance.

Applications

• Conference and meeting rooms

• Cinemas and theatres

• Courts

• Lecture halls, schools and universities

• Places of worship

Specifications

Physical Data

• Dimensions: 327mm (H) x 412mm (W) x 75mm (D)

• Weight: 1.1kg (2.42lbs)

• Finish: Black

• Mounting: Wall or ceiling mounting kit included

Technical Data

• Power Supply: 210–240V AC 50/60Hz → 28V DC output

• DC Input: Low-voltage connector, 28V DC, centre contact negative

• Power Consumption: 700mA

• Carrier Frequencies: 2.3MHz (A-channel) and 2.8MHz (B-channel)

• Frequency Response: 125Hz – 18kHz

• Coverage Area: 900m² (closed room)

• Audio Inputs: RCA (Cinch) for left/right or A/B channel

• Microphone Inputs: 2 x 6.3mm stereo-jack plugs

• Input Impedance: Audio-In 18kΩ, Mic-In 1.3kΩ

• Trigger Voltage (Audio-In): 110mV

• Mic Input Sensitivity: 1.5mV

• Combined Mode: Sync-In/Sync-Out RCA for left/right or A/B channel

• Display: Input level LEDs, one per channel

• Operating Temperature: 0°C – +40°C (non-condensing, non-corrosive environment)

Key Features

• 2 channel infrared transmission with wide coverage (900m²)

• 2 microphone and 2 line inputs for flexible connectivity

• Link multiple units to extend coverage

• Rack-space saving, slimline design

• Includes wall/ceiling mount kit

• Designed for professional installations in large venues