Definitive Audio Td 400 Mh

Why UHF True Diversity Remains a Reliable Choice for Multi-Mic Setups

In multi-mic configurations, the priority is to obtain a stable, reproducible signal that is easy to use both on stage and during performances. The UHF architecture combined with PLL frequency synthesis meets this requirement by ensuring precise channel selection and consistent operating characteristics. True Diversity, on the other hand, uses two reception paths to improve reliability when the radio environment becomes more complex (movement, reflections, obstacles), a key point as soon as multiple transmitters are involved.

Who Is This 4-Handheld Mic Pack For?

This system is designed for applications where you need to amplify up to four voices simultaneously: hosting, conferences, multipurpose rooms, places of worship, associations, singing lessons, corporate interventions, or small live bands. The advertised range reaches 60 m line-of-sight distance, suitable for compact stages and indoor events, while maintaining a clean setup thanks to the 1U rack format.

Key Features for Quick Operation and Efficient Radio Management

Wide Tuning and Frequency Organization

The receiver offers a tuning bandwidth up to 50 MHz and up to 2000 switchable frequencies (depending on the region). This margin facilitates adaptation to local conditions and coexistence with other RF systems. The presence of a frequency group design also helps structure channel configuration.

Simplified Transmitter Synchronization

The ACT function allows wireless synchronization of the transmitter via an infrared interface. In practice, this reduces handling and speeds up setup, a valuable advantage during stage changes or temporary installations.

Control and Readability in Real Conditions

The front panel features 4 color LCD screens and an interface composed of 1 main control and 4 sub-channels with color LCD function displays. The background color of the sub-display is adjustable, a useful detail to improve readability depending on ambient light and rack distance.

Audio: Direct, Mix, and Sound Finishing

For console integration, you have 4 balanced XLR outputs (ideal for processing each microphone separately) as well as a balanced 6.35mm Jack output of the Mix Out type for a summed output. A 7-band adjustable equalizer processor is integrated to quickly adapt the tonal color to the voice, the room, or the sound system.

Handheld Microphones: Cardioid Directionality and Color Display

The four handheld microphones feature a cardioid capsule to prioritize the voice and better manage monitors, as well as a color LCD screen for information monitoring. The PLL frequency synthesis is also present on the transmitter side, with a transmission power rated up to 30 mW (depending on the region).

Technical specifications

Category

Complete system

Directivity

cardioid

Type	quadruple handheld UHF True Diversity microphones, 4 channels	Modulation Mode	FM modulation
Band	UHF	RF Sensitivity	at Input 6dB?V, S/N greater than 80 dB
UHF Frequency Range	580 to 608 MHz	Operating Range	60 m line-of-sight distance
Circuit	PLL phase-locked loop (stable characteristics, low harmonic radiation)	Silent Control Mode	audio code and noise lock
Tuning Bandwidth	up to 50 MHz (up to 2000 switchable frequencies, depending on the region)	Built-in Frequency Response	50 Hz to 18 kHz (+/-3 dB)
Design	frequency group	Built-in THD	less than 0.5% at 1 kHz
Maximum Transmission Power	13 dBm (depending on the region)	Panel Display	LCD + LED
Antenna Distribution System	integrated	Chassis	1U
Antennas	2 antenna sockets	Rack Ears	included
Antennas Included	2 separate antennas for better reception	Dimensions (mm)	483 x 46 x 162
Equalizer Processor	7-band adjustable	Weight	4.60 kg
ACT Function	wireless transmitter synchronization via infrared interface	Pickup Gain	fixed gain
Frequency Response Range	50 Hz to 16 kHz (flat response)	Transmission Power	up to 30 mW (depending on the region)
Outputs	4 balanced XLR outputs	Current Consumption	less than 130 mA
Output	balanced 6.35mm Jack "Mix Out"	Display	color LCD
Reception Channel	single channel	Capsule	cardioid
Oscillation Mode	PLL phase-locked loop, frequency synthesis