Definitive Audio Td 400 Mh/Pt

A "1U Rack" Format Designed for Modern Sound Reinforcement

This wireless microphone system fits the logic of current sound reinforcement setups: a 1U rack-mountable receiver, connectivity adapted to consoles, and frequency management designed to minimize issues in the field. The combination of a UHF band and PLL frequency synthesis aims for stable use, with low harmonic radiation and consistent settings from event to event.

For gigs, places of worship, multipurpose rooms, or fixed installations, having 4 channels in a single chassis simplifies cabling and speeds up setup, while maintaining clear readability thanks to dedicated color LCD screens.

Who Is This 4-Channel UHF Microphone Pack For?

This pack is particularly relevant if you need to manage multiple speakers with different needs: singer with handheld microphone, lecturer with lavalier microphone, coach or presenter with headset, or an animation team with quick user alternation. The 2 bodypack transmitters allow choosing the most discreet format (lavalier) or the most dynamic (headset) depending on the situation.

It is also suitable for contexts where you want to limit handling: centralized settings on the receiver, readable display, and the ability to synchronize transmitters facilitate operation, even when the stage changes quickly.

Key Features for Reliable and Fast Operation

RF Stability: PLL, Frequency Groups, and Wide Tuning Range

The system relies on a PLL phase-locked loop synthesis circuit and a frequency group design : several predefined groups are provided to align with the operating frequency. The tuning bandwidth can reach 50 MHz, allowing up to 2000 switchable frequencies (depending on the region). This flexibility is useful when multiple wireless systems coexist or when the radio environment changes.

True Diversity Reception and Integrated Antenna Management

True Diversity reception combined with 2 separate antennas aims for better reception by limiting the impact of field variations. The receiver also integrates an antenna distribution system designed to effectively reduce mutual radiation interference between antennas, a valuable feature in a rack when multiple radio elements are close together.

User Comfort: Color Displays and ACT Infrared Synchronization

The receiver features 4 color LCD screens with adjustable background color, and an interface combining 1 main control and 4 sub-channels with display. The ACT function allows wireless synchronization of transmitters via an infrared interface, convenient for speeding up setup and avoiding tuning errors.

Audio Quality and Mix Adaptation

To fit various uses (spoken voice, singing, hosting), the system offers a frequency response ranging from 50 Hz to 16 kHz with a flat response, and an integrated receiver frequency response of 50 Hz to 18 kHz (+/- 3 dB). A 7-band adjustable equalizer processor allows tailoring the sound according to voices, room, and sound system, complementing console settings.

Technical specifications

Category	Complete system	Capsule	dynamic / static
Directivity	cardioid

Quadruple UHF wireless microphone system	2 handheld microphones + 2 bodypack transmitters	Modulation mode	FM modulation
Type	True Diversity, 4 channels	RF sensitivity	at Input 6 dBV, S/N > 80 dB
Band	UHF	Integrated frequency response	50 Hz to 18 kHz (+/- 3 dB)
UHF frequency range	580 to 608 MHz	Integrated THD	< 0.5% at 1 kHz
Circuit	PLL phase-locked loop, stable characteristics, low harmonic radiation	Panel display	LCD + LED
Frequency group design	several predefined groups compatible with operating frequency	Dimensions (mm)	483 x 46 x 162
Tuning bandwidth	up to 50 MHz	Weight	4.60 kg
Number of switchable frequencies	up to 2000 (depending on region)	Chassis	1U
Maximum transmission power	13 dBm (depending on regions)	Integrated antenna distribution system	effectively reduces mutual antenna radiation interference
ACT function	wireless transmitter synchronization via infrared interface	Screens	4 color LCD screens, adjustable background color, 1 main control + 4 sub-channels with color LCD screen
Operating range	60 m linear distance	Pickup gain	fixed gain
Silent control mode	audio code and noise lock	Transmission power	up to 30 mW (depending on region)
Equalizer processor	7-band adjustable	Current consumption	< 130 mA
Frequency response (system)	50 Hz to 16 kHz with flat response	Display	color LCD
Reception channel	single channel	Gain control	adjustable gain
Oscillation mode	PLL phase-locked loop, frequency synthesis