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LD Systems LDU506CS4 4 Channel Wireless Conference System

LD Systems LDU506CS4 4 Channel Wireless Conference System was developed and engineered in Germany by LD Systems to meet the requirements of wireless conferencing. Offering a professionally equipped solution for clear, 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 roundtables into successful events.

The U500® terminals feature a gooseneck condenser microphone with hyper-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 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 unauthorized 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


Product number: LDU506CS4
Product type: Microphone Accessories
Modulation Type: FM
Channels: 162
Antenna inputs: 2
Frequency response: 60 – 16000Hz
Rated HF output power: 10 mW
THD: < 0.2 %
Controls: Power On/Off
Audio output, balanced: 4 x XLR
Audio mix output, balanced: XLR
Width: 484mm
Height: 44mm
Operating voltage: 1,000 mA


For more information, please visit the manufacturer's website.