INFRARED CLASSROOM AMPLIFICATION SYSTEM USER'S MANUAL 780iR

LES 780iR Classroom Amplification System Components:
Power Supply
SR-70 Infrared Sensor Cable
SR-70 Infrared Sensor
Various speakers are available and are
typically shipped in a separate box with
plenum-rated speaker wire.
RCA Cables
Speaker(s)
LES 780iR Receiver/Amplifier
Troubleshooting Guide
Please go through this checklist before calling
LightSPEED Service Department.
Battery Check:
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  
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  
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  
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  
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  
Hearing Static or Buzzing:
  
  
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   
  
Low Volume:
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  
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  
Sound Fades In and Out
(Drop Out):
   
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No Sound From Speaker:
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  
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  
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  
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  
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LT-70 LightMic
™
Microphone/Transmitter
[2]
[17]