LD Systems


Installers only. POA.

7.92 KGS
0.53 (cm)
0.34 (cm)
0.59 (cm)

LD have developed the U500® in Germany to meet all of your requirements of a wireless conference system. It offers a professionally equipped solution for effective communication and interaction with advanced technology, excellent speech intelligibility and an elegant appearance. The user-friendly True Diversity UHF system with 60 channels in 6 groups facilitates easier installations and turns conferences, meetings and round tables into successful events.

The U500® terminals feature a gooseneck condenser microphone with cardioid characteristic and a light ring to display status. The heavy table stand features an XLR microphone input, 28 V phantom power, an on-off-mute switch, as well as a gain control and a selectable 130 Hz high-pass filter to effectively reduce proximity effect and structure-borne sound. A high-contrast OLED display shows radio frequency, battery status, terminal number, group and channel. The audio transmission range is 60 Hz - 16 kHz.

For simple, fast configuration, the 4-channel U500® conference system receiver features automatic frequency and channel scanning, infrared synchronisation, a digital encoder and 4 buttons to directly access the individual channels. The high-contrast OLED display provides a comprehensive overview of all functions and settings such as audio and radio signal strength, and priority and battery status of the terminals. The number of simultaneously-live microphones can be configured in order to eliminate crosstalk, feedback and comb filter effects. Selectable automatic or manual gate settings and a pilot tone ensure that the U500® conference system delivers superb sound quality with excellent noise immunity. In addition to its individual channel outputs, the receiver also has a master output, an access lock to prevent unauthorised adjustment of settings, and the RS-232 interface to facilitate integration into external control systems.

For system expansion, up to five U500® receivers can be cascaded and used in master-slave mode, making a maximum of 20 terminals possible. The U500® conference system is available in three versions which work in the following frequency areas: 554 - 586 MHz, 662 - 694 MHz or 823 - 832 MHz + 863 - 865 MHz

  • True diversity UHF wireless conference system
  • Automatic channel scan
  • Automatic frequency search
  • Infrared frequency synchronizing of receiver and microphone unit
  • Pilot tone
  • Priority switching
  • Automatic and manual gate modes
  • Security lock
  • RS-232 interface for external control
  • Set consisting of: 1 receiver, 4 microphone bases and 4 gooseneck microphones
Product type Microphone Accessories
Product type Conference Systems
Type Installations
Transmission frequency range 554 - 586 MHz
Modulation Type FM
Transmission frequency range 554 - 586 MHz
Channels 150 (10 x 15)
Groups 10
Channels 150 (10 x 15)
Groups 10
Inputs XLR
Antenna inputs 2
Antenna connector BNC
Frequency response 60 - 16000
Signal-to-noise ratio > 100 dB
Frequency response 60 - 16000
Rated HF output power 10 mW
Noise reduction Squelch
Total Harmonic Distortion (THD) < 0.2 %
Signal-to-noise ratio > 100 dB
Controls Power / Mute
Controls Gain
Controls Low Cut
Indicators OLED Display
Indicators LED
Audio output, balanced 4 x XLR
Power supply 2 x AA battery
Operating time up to 8 hrs., battery-dependent
Audio mix output, balanced XLR
Width 115 mm
Height 54 mm
Depth 135 mm
Max. output level +12 dBu
Weight 0,73 kg
Controls digital encoder
Controls Power On/Off
Controls RX 1 - 4 quick access buttons
Indicators OLED Display
Operating voltage 1,000 mA
Operating voltage 12 V DC
Width 484 mm
Height 44 mm
Depth 243 mm
Scope of delivery 4 x gooseneck conference microphones
Scope of delivery Receivers
Scope of delivery 4 x Conference System Microphone Base
Weight 6 kg