The U500® Series vocal sets were developed in Germany to bring you affordable professional technology and sound quality. The radio systems for vocals and speech deliver impressive performance and high reliability, which will certainly exceed your expectations. We have designed the range specifically for professional users to ensure that your performance is an impressive and emotional experience.

Selectable transmit power up to 30 mW provides the U500® vocal sets with a free-field range of over 100 metres. They are available in three frequency bands: 584 - 608 MHz and 655 - 679 MHz, where 12 systems can be operated simultaneously, and 823 - 832 MHz + 863 - 865 MHz, where six systems can be operated at the same time. The True Diversity UHF wireless systems are equipped with an automatic scan facility to find the best free frequency, and convenient one-touch infrared synchronisation of transmitter and receiver to facilitate easy set up.

High-contrast OLED displays provide an excellent overview of functions, with indicators for group, channel, radio frequency, and signal strength and battery status. You can even enter individual usernames. In addition to the squelch function, the transmitter’s silent pilot tone ensures fail-safe operation. It protects against interference and mutes the receiver if signals without this tone are present. The U500®’s efficient technology and high-quality components provide clear, distortion-free transmission without latency or artefacts. Low power consumption means that the transmitter can run for up to 10 hours with 2 x AA batteries.

The U500® Series vocal sets are available with hand-held transmitters, headsets, lavalier microphones and single or double receivers. The hand-held transmitters feature interchangeable microphone capsules to suit singing or speaking.

Overview of frequency ranges of vocal sets:

• U505 // 584 - 608 MHz // 12 systems can be used simultaneously

• U506 // 655 - 679 MHz // 12 systems can be used simultaneously

• U508 // 823 - 832 MHz + 863 - 865 MHz // six systems can be used simultaneously
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• Product number:	LDU505HHD
  Type:	true diversity
  Transmission frequency range:	584 - 608MHz
  Weight:	2.7kg, 1.1kg
  LDU505R - Receiver
  Product type:	Wireless Microphone System Accessories
  Type:	Receivers
  Modulation Type:	FM
  Transmission frequency range:	584MHz
  Channels:	96 (8 groups of 12 channels)
  Groups:	8
  Antenna inputs:	2
  Antenna connector:	BNC
  Frequency response:	30Hz
  Noise reduction:	squelch
  THD:	<0.1 %
  Signal-to-noise ratio:	> 100dB
  Audio output, balanced:	XLR
  Audio output, unbalanced:	6.3 mm Jack
  Max. output level:	+10dBu
  Controls:	digital encoder, Power On/Off, volume
  Indicators:	OLED Display
  Operating voltage:	12 - 18 V DC, 12 V DC, 500 mA
  Width:	212mm
  Height:	44mm
  Depth:	159mm
  Weight:	0.85kg
  Accessories (included):	Audio cable, 2 x antenna, power adapter
  Other features:	pilot tone, channel search function, IR frequency synchronisation
  LDU505MD - Dynamic Handheld Microphone
  Product type:	Wireless Microphone System Accessories
  Type:	Microphones
  Transmission frequency range:	584MHz
  Channels:	96 (8 groups of 12 channels)
  Groups:	8
  Microphone type:	dynamic
  Directivity:	cardioid
  Frequency response:	60 - 16,000Hz
  Signal-to-noise ratio:	>95dB
  Rated HF output power:	Variable (2mW, 10mW, 30mW)
  Controls:	menu, select, arrow keys (up/down value entry), Power On/Off
  Indicators:	OLED Display
  Operating voltage:	2 x AA battery
  Operating time:	>10 h (with alkaline batteries)
  Length:	257mm
  Diameter:	51mm
  Weight:	0.25kg
  Other features:	Pilot tone squelch, switchable gain, IR frequency synchronisation, switchable RF power, switchable gain, interchangeable capsule