LightSpeed Technologies 820iR User Manual
820ir, Using your microphone, Classroom audio system

SPEAKER OUTPUTS
250
400
700
1K
1K4
2K5
4K
6K3
+10
0
-10
AUDIO INPUT
CHARGERS
DC
POWER
TV/VCR CD/DVD
L
L
R
R
24V
DC
SENSOR INPUT
SENSOR
SHORT
2.06/2.54
POWER
A VOLUME
B VOLUME
TV/VCR
CD/DVD
ASSISTIVE LISTENING
IR
IR
AF
AF
WIRELESS MICROPHONE VOLUME
AUDIO INPUT VOLUME
ALD VOLUME
LES 820iR Classroom Amplification System
POWER
A VOLUME
B VOLUME
TV/VCR
CD/DVD
ASSISTIVE LISTENING
IR
IR
AF
AF
WIRELESS MICROPHONE VOLUME
AUDIO INPUT VOLUME
ALD VOLUME
LES 820iR Classroom Amplification System
POWER
A VOLUME
B VOLUME
TV/VCR
CD/DVD
ASSISTIVE LISTENING
IR
IR
AF
AF
WIRELESS MICROPHONE VOLUME
AUDIO INPUT VOLUME
ALD VOLUME
LES 820iR Classroom Amplification System
POWER
A VOLUME
B VOLUME
TV/VCR
CD/DVD
ASSISTIVE LISTENING
IR
IR
AF
AF
WIRELESS MICROPHONE VOLUME
AUDIO INPUT VOLUME
ALD VOLUME
LES 820iR Classroom Amplification System
POWER
A VOLUME
B VOLUME
TV/VCR
CD/DVD
ASSISTIVE LISTENING
IR
IR
AF
AF
WIRELESS MICROPHONE VOLUME
AUDIO INPUT VOLUME
ALD VOLUME
LES 820iR Classroom Amplification System
Classroom Audio System
USING YOUR MICROPHONE
Lightspeed microphones require 8 hours to fully charge.
CONNECTING MULTIMEDIA
ASSISTIVE LISTENING AND RECORDING
LIGHTSPEED TECHNOLOGIES, INC. | www.LIGHTSPEED-TEk.COM | 800.732.8999
Interface seamlessly with computers, MP3, DVD, TV and other
audio devices.
Use your
microphone
to remotely
connect audio to
your system
Send audio directly to an ALD or to a digital recorder
for lesson capture and re-broadcast on school
websites.
Always
connect
to the
MIC or
AUX
input
jack
LT-71
Grip the
barrel of the
handheld in
the center
section.
LT-71
A
CH B
OFF
ON
LT-71
RCA plug
3
SPEAKER OUTPUTS
250 400 700 1K 1K4 2K5 4K 6K
+10
0
-10
OFF
OFF
OFF
OFF
ON
ON
ON
ON
VOL.
ADJ.
ALD OUT AUX OUT
VOL.
ADJ.
REMOVE FROM CHARGER
Two microphones cannot operate on the same channel.
CHANNEL SELECT
The position of
the microphone
is critical for
proper volume
adjustment.
POSITION MICROPHONE
TURN ON MICROPHONE
If necessary adjust volume so you can barely hear your own voice.
REMEMBER:
Volume set too high will result in system feedback (squealing).
SET VOLUME
TURN OFF AND
RETURN TO CHARGER
LT-71
3.5mm
plug
ALD Transmitter
3.5mm
plug
RCA
plug
RCA
plug
3.5mm
plug
Recording
Device
LT-71
820iR
SPEAKER OUTPUTS
250
400
700
1K
1K4
2K5
4K
6K3
+10
0
-10
AUDIO INPUT
CHARGERS
DC
POWER
TV/VCR CD/DVD
L
L
R
R
24V
DC
SENSOR INPUT
SENSOR
SHORT
2.06/2.54
1
2