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820iR User Manual | 6
13| 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
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
1. SPEAKER OUTPUTS (1–4): These
binding post connectors are used to
connect the 820iR to the loudspeakers.
Depending on speaker, all outputs
may not be used.
2. DC POWER: Plug the 24 V power
supply into this jack.
3. CHARGERS: These jacks charge the
LightMic(s) and optional handheld
microphone with the supplied charg-
ing cable(s).
4. AUDIO INPUTS:
• TV/VCR: Accepts stereo signal
from TV/VCR via RCA cable.
• CD/DVD: Accepts stereo signal
from CD/DVD player via RCA cable.
5. 8-BAND GRAPHIC EQUALIZER: The
sliding controls adjust the levels of
the various audio frequencies. This
allows the installer to properly
equalize the system to produce
optimum sound quality.
6. SENSOR INPUT: The IR sensor
cable connects to the sensor input.
Connect additional sensors to the
820iR to cover large or odd-
shaped classrooms.
7. SENSOR SHORT: This LED glows
when there is a short in one of the
sensor cables.
1
4
5
6
2
3
7
REAR PANEL CONTROLS
OUTPUT TO PERSONAL FM TRANSMITTER
POWER
A VOLUME
B VOLUM
E
TV/VCR CD/DV
D
ASSISTIVE LISTENING
IR
IR
AF
AF
WIRELESS MICROPHONE VOLUME
AUDIO INPUT VOLUME
ALD VOLUM
E
LES 820iR Classroom Amplification System
2. Determine the size and type of audio input
jack on the device as many manufacturers’
products differ in connector size and
shape. The LightSPEED LES-370 Personal
FM System requires a 3.5 mm to 3.5 mm
patch cable (part# CA-MMC3535, not included).
5. With the 820iR and ALD turned on, speak into the LightMic and slowly
adjust the corresponding “ALD VOLUME” control until the appropriate
audio level is attained in the ALD’s receiver headphones.
1. Turn the ALD (Assistive Listening Device) volume control on
the front panel all the way down (fully counterclockwise).
3. Connect a patch cable from the ALD’s
microphone jack or AUX input to the 3.5
mm “ASSISTIVE LISTENING” jack on the
front of the 820iR.
4. Adjust the volume control on the ALD’s receiver to maximum
output. NOTE! This is to set the maximum allowable signal
from the 820iR.
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