LightSpeed Technologies Classroom Audio System User Manual
USING YOUR MICROPHONE
LT - 71
LT- 71
A CH B
OFF
ON
LT- 71
250 400
700
1K 1K4
2K5
4K
6K
+10
0
-10
OFF
OFF
ON
VOL.
ADJ.
ALD OUT
AUX OUT
VOL.
ADJ.
LT - 71
LT- 71
REMOVE FROM CHARGER
Lightspeed microphones require 8 hours to fully charge.
Classroom Audio System
CHANNEL SELECT
Two microphones cannot operate on the same channel.
POSITION MICROPHONE
The position of
the microphone
is critical for
proper volume
adjustment.
Grip the
barrel of the
handheld in
the center
section.
TURN ON MICROPHONE
CONNECTING MULTIMEDIA
Interface seamlessly with computers, MP3, DVD, TV and other
audio devices.
3.5mm plug
1
3
2
RCA plug
3.5mm
plug
Use your
microphone
to remotely
connect audio to
your system.
3.5mm
plug
RCA
plug
3.5mm
plug
SET VOLUME
If necessary adjust volume so you can barely hear your own voice.
REMEMBER: Volume set too high will result in system feedback (squealing).
TURN OFF AND
RETURN TO CHARGER
LIGHTSPEED TECHNOLOGIES, INC. | WWW.LIGHTSPEED-TEK.COM | 800.732.8999
ASSISTIVE LISTENING AND RECORDING
Send audio directly to an Assistive Listening Device
(ALD) or to a digital recorder for lesson capture and
re-broadcast on school websites.
1
3
2
3.5mm
plug
ALD Transmitter
Recording
Device
Always
connect
to the
MIC or
AUX
input
jack.
TROUBLESHOOTING GUIDE
NOTE! Most problems are directly related to low
battery power. Please run through the “Battery
Check” items rst. For remaining troubleshooting, use known good, fully-charged batteries.
Battery Check
•Conrm batteries are charged
each night.
•Conrm proper batteries are used.
The REDMIKE requires the Lightspeed
BA-NH2A27 sensing battery for
proper charging.
•Make sure the REDMIKE is turned off
while charging so that it will attain a
full charge. Full charge will last
seven hours.
•Inspect the battery contacts. Clean
and adjust if necessary.
Hearing Static
•Ensure REDCAT is in optimum
location (refer to REDCAT placement
in manual). A single REDCAT will
cover a 1200 sq. ft. enclosed
classroom.
•Ensure that no other REDMIKE/LT71/
HM70 is operating on the
same channel.
•If 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.
Low Volume or Feedback
• Ensure microphone is positioned
appropriately, just below the
collar bone.
•Check volume level on the amplier.
If the volume is too high, feedback
will occur. Adjust accordingly.
No Sound From Speaker
•Ensure the REDCAT is plugged in
and is turned on. Conrm that the
POWER light located on the power
switch is on.
•Conrm signal is being received at
the REDCAT. The IR signal light will
be lit (RED) indicating a signal is
being received.
•Conrm that REDMIKE is turned on.
There will be a BLUE LED on
the microphone to indicate it is
powered on.
Classroom Audio System
Contact us:
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
TIPS ON CLASSROOM AUDIO
Speak 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 amplication (approximately 5 – 10 dB) above
1
2
3
4
ambient room noises.
Avoid wearing jewelry that may rub or bump against
the microphone.
Turn 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.
Recharge batteries each night. When recharged nightly, operating
time (actual usage) for the transmitters will last through a typical
school day.
Five-year Limited Warranty
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 nish, appearance items, or malfunctions due to abuse
or operation other than specied 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.
Our Service Department (800.732.8999, 5 a.m. – 5 p.m., PST)
will handle all your repair/replacement needs.
MN0007US01-0
LIGHTSPEED TECHNOLOGIES, INC. | WWW.LIGHTSPEED-TEK.COM | 800.732.8999
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