Audibax AWM 403 - 4-Channel UHF Wireless System with 4 Headset Microphones and Bodypacks

Audibax AWM 403 - 4-Channel UHF Wireless System with 4 Headset Microphones and Bodypacks

The Audibax AWM 403 is a four-channel UHF (640–690 MHz) wireless system designed for professional use in events, education, corporate settings, religious services, and rental applications . It includes a four-channel receiver , four bodypack transmitters with mini-XLR connectors , and four condenser headset microphones for close-range, stable, and highly intelligible sound. Thanks to its UHF PLL modulation , 2×32 MHz bandwidth , and infrared (IR) synchronization , it allows for quick frequency selection and adjustment, maintains robust links, and minimizes interference in demanding RF environments.

The receiver offers a signal-to-noise ratio >105 dB(A) and distortion <0.3% at 1 kHz , with a frequency response of 50 Hz to 15 kHz for natural voice. The rear panel features four independent balanced XLR outputs (CH1–CH4) and a 1/4″ TRS combo output for summing channels when a quick connection is required. The operating range reaches up to 100 m under ideal conditions, and the system operates from −10 °C to 55 °C . Each beltpack is powered by two AA batteries , with frequency stability <30 ppm and a dynamic range ≥100 dB(A) , ensuring consistent performance throughout the day.

Main features

• 4 independent UHF channels (640–690 MHz) with PLL , 2×32 MHz bandwidth and ±45 kHz compensation .
• Complete pack: receiver + 4 bodypack transmitters + 4 condenser headset microphones (mini-XLR).
• Pro Audio: S/N >105 dB(A), THD <0.3% at 1 kHz, 50 Hz–15 kHz , SPL max. 130 dB .
• Receiver connectivity: 4 balanced XLR outputs (CH1–CH4) + 1/4″ TRS MIX output .
• Range and robustness: up to 100 m (ideal environment); operating from −10 °C to 55 °C .
• Agile operation: IR scanning and synchronization to quickly assign free frequencies.
• Simple power supply: 2×AA batteries; DC 12–16 V receiver.

Product benefits

• Total freedom of movement: discreet and lightweight headbands that keep your voice always present.
• Efficient signal management: XLR outputs per channel for individual mixes or MIX output when a single line is needed.
• RF Stability: PLL and wide bandwidth help avoid overlaps and drops in saturated environments.
• Quick setup: IR synchronization and direct control from the receiver for "ready to use" functionality.

Use cases

• Events and conferences: speakers, panels and moderation with hands-free and consistent sound.
• Education and training: classrooms, auditoriums and face-to-face courses with stable coverage.
• Theatre, worship and fitness: clear voices during performances, services and group classes.
• Corporate and AV: fast integrations with balanced outputs to desks or matrices.

Frequently Asked Questions

• What's included in the pack? 4-channel receiver, 4 beltpacks , 4 headsets , antennas and receiver power supply.
• How are the frequencies assigned? By scanning and IR synchronization from the receiver to each beltpack.
• What outputs does the receiver have? 4 balanced XLR (one per channel) and 1 unbalanced 1/4″ TRS MIX .
• Does it need batteries? Yes, each flask uses 2 AA batteries . The receiver runs on DC 12–16 V.
• Is it valid in any country? Check the applicable UHF frequency regulations in your region before operating.

Usage recommendations

• Place the receiver with line of sight to the transmitters and separate the antennas from RF sources.
• Leave some headroom on the console inputs; use attenuation on the pack if necessary.
• Assign free frequencies by scanning and lock controls after adjustment to prevent accidental changes.

Project description

Audibax AWM 403 Wireless System , UHF 640–690 MHz , 4 channels . Receiver with four balanced XLR outputs (250 mV/600 Ω) and one 1/4″ TRS MIX output (400 mV/3 kΩ); S/N >105 dB(A) , THD <0.3% at 1 kHz . PLL beltpacks ( <30 ppm ), 50 Hz–15 kHz frequency response , ≥100 dB(A) dynamic range , max. 130 dB SPL , with mini-XLR connector. Range up to 100 m (ideal); operating temperature −10 °C to 55 °C. Includes four condenser headsets .