LightSpeed Technologies Classroom Audio System Merkblatt

Most problems are directly related to low 

battery power. Please run through the “Battery 
Check” items first. For remaining troubleshoot-
ing, use known good, fully-charged batteries.

TROUBLESHOOTING GUIDE

1

TIPS ON CLASSROOM AUDIO

 wearing jewelry that may rub or bump against  

the microphone.

 off the REDMIkE during private conversations with a student,  

parent, or other classroom visitor. You can also cover the LED  
lens on top of the REDMIkE to block the signal.

 batteries each night. when recharged nightly, operating  

 time (actual usage) for the transmitters will last through a typical     
 school day.

 

Lightspeed Classroom Audio Systems are guaranteed against malfunction due to defects 
in materials and workmanship for a period of FIVE (5) YEARS, beginning at the date of 
the purchase invoice. If such malfunction occurs, the product will be repaired or replaced 
(at Lightspeed’s option) without charge during the warranty period.

1. warranty on infrared microphones is FIVE (5) YEARS. 

2. warranty on Lightspeed rechargeable batteries, all external cables and wires provided 

by Lightspeed is one (1) year.

3. Prepaid shipping labels are provided by Lightspeed factory or an authorized warranty 

service center for warranty repairs.

4. Warranty does not extend to finish, appearance items, or malfunctions due to abuse 

or operation other than specified conditions, nor does it extend to incidental or 
consequential damages. Repair by other than Lightspeed or its authorized service 
agencies will void this guarantee. Information on authorized service agencies is 
available from Lightspeed Technologies, Inc.

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3

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in a natural voice. A normal conversational speech level 

will provide an adequate signal. It is not necessary to increase  
the intensity of your voice—the audio system provides  
adequate amplification (approximately 5 – 10 dB) above  
ambient room noises.

LIGHTSPEED TECHNOLOGIES, INC.  |   www.LIGHTSPEED-TEk.COM   |   800.732.8999

LIGHTSPEED TECHNOLOGIES
11509 Sw HERMAN ROAD
TUALATIN, OREGON 97062 
 TOLL FREE: 800.732.8999
PHONE: 503.684.5538
FAX: 503.684.3197 
www.LIGHTSPEED-TEk.COM

MN0007US01-0

Classroom Audio System

 batteries are charged  

each night. 

 proper batteries are used. 

The REDMIkE requires the Lightspeed 

BA-NH2A27 sensing battery for 

proper charging.

 sure the REDMIkE is turned off 

while charging so that it will attain a 

full charge. Full charge will last  

seven hours.

 the battery contacts. Clean 

and adjust if necessary.

 REDCAT is in optimum 

location (refer to REDCAT placement 

in manual). A single REDCAT will 

cover a 1200 sq. ft. enclosed 

classroom.

 that no other REDMIkE/LT71/

HM70 is operating on the  

same channel.

 an external microphone is in use, 

try another REDMIkE that is known 

to be working (if available) to isolate 

the problem. If static persists with 

“known good” microphone, the 

REDMIkE input jack will need service.

• Ensure

 microphone is positioned 

appropriately, just below the  

collar bone. 

 volume level on the amplifier. 

If the volume is too high, feedback 

will occur. Adjust accordingly.

 the REDCAT is plugged in  

and is turned on. Confirm that the 

POwER light located on the power 

switch is on.

 signal is being received at 

the REDCAT. The IR signal light will 

be lit (RED) indicating a signal is 

being received.

 that REDMIkE is turned on. 

There will be a BLUE LED on  

the microphone to indicate it is 

powered on.