9
1. Overview
2. Daily Operarion
3. Optional
Accessories
4. T
roubleshooting
5. W
arranty &
Specifications
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
820iR: FRONT PANEL CONTROLS
1. POWER SWITCH/POWER
INDICATOR: Use this switch to
turn the 820iR on (switch up),
or off (switch down). When the
POWER is switched on, the
red LED indicator will light.
2. IR INDICATORS (IR): These
lights will glow red when the
corresponding microphone
(channel A or B) is turned on
and transmitting. A steady
light indicates a strong signal.
3. AF INDICATORS (AF): These
lights flash green when audio
(voice) from the microphone is
detected.
4. A VOLUME: Controls the
volume level of the teacher
microphone (set to channel A).
Rotating the knob clockwise
increases output level.
5. B VOLUME: Controls the
volume level of the optional
second microphone (set to
channel B). Rotating the knob
clockwise increases output
level.
6. AUDIO INPUT VOLUMES:
Control the volume of the
audio coming from the media
source (computer, TV/VCR,
CD/DVD, etc.) connected to
the corresponding input on
the rear panel.
7. ALD OUTPUT AND VOLUME:
This jack sends audio to
external equipment such as
an assistive listening device
like Lightspeed’s 370 Personal
FM System. Use the volume
control to set the optimum
signal level for the device.
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