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SU20 User Manual 

Setting Up 

 

Insert the supplied AA batteries into the handheld transmitter by carefully unscrewing the base to reveal 
the battery compartment inside the microphone body, connect the batteries ( and - are the 

correct way around for each cell) and carefully screw the base back on.  

 

For bodypack transmitters, gently pull downward at the inset on the front of the beltpack and flip forward 

the front cover to reveal the battery compartment. Insert 2 x AA batteries ( and - are the correct 
way around for each cell). Connect the 3.5mm jack connector from the neckband or lavalier microphone 
to the input on top of the bodypack transmitter and rotate to secure the thread. 

 

Position the receiver within the best available line of sight to the transmitter and connect the DC jack of 
the supplied power adapter to the receiver and the plug-top to the mains outlet.  

Connect the 2 UHF antennas to the BNC connector on the rear panel or alternatively, attach each to the 
supplied rack mounting brackets, connecting via the BNC extension lead supplied.  
Turn mic levels for CH. A and CH. B down on the receiver. 

 

A choice of unbalanced 6.3mm jack or balanced XLR output is available on the rear panel of the receiver. 
Connect the supplied 6.3mm jack lead for a mix of both channels or optionally, connect an XLR lead to 

each balanced XLR output for 2 independent outputs.  

 

Turn down the volume of any equipment (mixer, amplifier etc.) that the signal will be fed into and then 

connect the jack lead or XLR leads to the equipment.  

 

Warning! - take care not to point the microphones towards speakers 

 this can cause damaging feedback 

(loud whistle or howling noise) 

 try to aim the microphone away from the speakers. 

 

Operation

  

 

Switch on power to the receiver unit. 

 

Move the switch on each handheld transmitter to the fully up position (ON) and gradually increase the 
microphone level on the receiver (for bodypack transmitters, move the top slide switch to 

“ON”)

, then 

increase the volume on the mixer or amplifier until the sound from each microphone can be heard 

through the equipment.  

 

Note: if output is low from the neckband or lavalier microphone, it may be necessary to adjust Gain 

control inside the bodypack unit 

 

After use, slide the transmitter 

switch to the “OFF” position, which mutes and deactivates the radio 

signal 

and powers down the transmitter. Turn down the volume of the mixer or amp and then switch off the 
receiver.  

 

Please note 

that the transmitter slide switch has a “MUTE” centre posit

ion, which is not used with the SU-

series system. Switching the transmitter off automatically mutes the reception channel. 

 

Unplug signal leads from the receiver and mixer or amplifier when moving or packing away.  

 

If the system is not to be used for long periods of time, remove the batteries from the transmitters and 

unplug the power adapter from the receiver and the mains outlet.  

 

Folding away or removing the antenna can also help avoid damage when the system is not in use. 

Summary of Contents for chord SU20

Page 1: ...al UHF Wireless System Item ref 171 907UK 171 908UK 171 917UK 171 918UK User Manual Version 1 0 Caution Please read this manual carefully before operating Damage caused by misuse is not covered by the warranty ...

Page 2: ... shock do not expose any of the components to rain or moisture If liquids are spilled on any component stop using immediately allow unit to dry out and have checked by qualified personnel before further use Avoid impact or heavy vibration to any of the components dropping the microphone can cause capsule failure No user serviceable parts inside transmitter or receiver refer servicing to qualified ...

Page 3: ...low channels working independently without interference with each other 1 Power on off switch 2 RF carrier signal indicator Channel A 3 AF audio signal indicator Channel A 4 VOLUME control Channel A 5 RF carrier signal indicator Channel B 6 AF audio signal indicator Channel B 7 VOLUME control Channel B 8 DC power input jack 9 BNC antenna connector Channel B 10 Unbalanced 6 3mm jack output CH A B 1...

Page 4: ...n down the volume of any equipment mixer amplifier etc that the signal will be fed into and then connect the jack lead or XLR leads to the equipment Warning take care not to point the microphones towards speakers this can cause damaging feedback loud whistle or howling noise try to aim the microphone away from the speakers Operation Switch on power to the receiver unit Move the switch on each hand...

Page 5: ...fier Ensure that receiver and amplifier mixer channel volumes are turned up Microphone output is very loud or distorted Turn down the relevant channel VOLUME on receiver Turn down gain on bodypack transmitters Reduce gain on mixer amplifier Ensure that an XLR output is not fed to a Hi Z line input Microphone output is very low Turn up VOLUME on receiver Turn up gain on bodypack transmitter Increas...

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