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2. Ensure speaker wire
connections are secure
and
not frayed.
1
2
SPEAKER OUTPUTS
250
400
70
0
1K 1K4
2K5
4K
6K3
+1
0
0
-1
0
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
820iR User Manual | 8
11 | 820iR User Manual
8 2 0 i R U s e r M a n u a l 8 2 0 i R U s e r M a n u a l
3. Connect the charging cables to yellow charging jacks labeled
“CHARGERS.” The loose end will be
connected to the charger
input on the microphone
.
1. Ensure the power switch is in the “OFF” position
and all front panel volume controls are turned
fully counter-clockwise.
6. Connect DC end of power supply
to the black power jack labeled
“DC POWER.”
7. Connect the black AC power cable
from the power supply to
a wall outlet.
FINALIZING RECEIVER/AMPLIFIER CONNECTIONS
INITIAL SET-UP
4. Connect any auxiliary audio
sources to corresponding
labeled input.
5. Ensure sensor cable is attached
securely.
>>
>>
>>
1. Ensure all cables are appropriately routed out of walking paths and work areas to
prevent safety hazards to individuals in the room.
2. The amplifier packing material should be kept for warranty shipping purposes.
Dispose of remaining system-packing material in the appropriate refuse containers.
Leave microphones charging so they are ready for use. Microphones will need to be
charged on a daily basis.
FINAL CHECK
>>
SPEAKER OUTPUTS
250
400
70
0
1K 1K4
2K5
4K
6K3
+1
0
0
-1
0
AUDIO INPUT
CHARGERS
DC
POWER
TV/VCR
CD/DVD
L L
R
R
24V
DC
SENSOR INPUT
SENSOR
SHORT
2.06/2.54
>>
LightSPEED amplifier controls the volume of each source
individually (one volume control for each source).
SYSTEM INTEGRATION DIAGRAM
Projector
DVD/VCR
Speaker(s)
IR Sensor
Te
acher’s
Microphone
Projector
Audio Out
IR Transmission
Video In
LT-71
Audio Out
Video Out
POWER
A VOLUME
B VOLUME
TV/VCR CD/DV
D
ASSISTIVE LISTENIN
G
IR
IR
AF
AF
WIRELESS MICROPHONE VOLUM
E
AUDIO INPUT VOLUME
ALD VOLUME
LES 820iR Classroom Amplification System
Video Out
SPEAKER OUTPUTS
250
400
700
1K 1K4
2K
5
4K
6K3
+1
0
0
-1
0
AUDIO INPUT
CHARGERS
DC
POWER
TV/VCR
CD/DVD
L L
R
R
24V
DC
SENSOR INPUT
SENSOR
SHORT
2.06/2.54