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USER NOTES
Record your system serial numbers and
purchase information. This is helpful
when ordering additional components,
accessories, and/or warranty service.
Components
850iR
Serial Number
Microphones
Speakers
Purchase Information
Your School/Organization
District
Purchase Date
Invoice
Sensors
1 | 850iR User Manual
850iR User Manual | 22
8 5 0 i R U s e r M a n u a l 8 5 0 i R U s e r M a n u a l
850iR Receiver/Amplifier
SR-70F
iR Sensor
(Optional) HM-70
Handheld Microphone
Congratulations on your purchase
of the 850iR Classroom Amplifica-
tion System! This simple, yet power-
ful technology provides crystal-clear
sound throughout the classroom,
allowing every child to hear every
word every time.
As the teacher speaks into the
LightMic pendant-style transmitter,
his or her voice is transmitted to the
850iR and then amplified through the
loudspeaker(s). The standard system
includes the 850iR infrared receiver/
amplifier, LT-71 LightMic
™
transmit-
ter, SR-70 infrared sensor and speaker
package.
The 850iR is a two-channel receiver
amplifier that allows the use of up
to two microphones simultaneously
and up to three additional audio input
sources (such as TV, VCR, DVD, CD,
MP3, etc.). In addition, LightSPEED
offers various speaker options that
are included with your system to
provide optimal sound in rooms of
all shapes and sizes.
The LT-71 LightMic is a wireless, pen-
dant-style transmitter. This two-chan-
nel, rechargeable unit is clipped to a
lavaliere cord and worn around the
neck for teacher use, or it can be used
like a standard handheld microphone
for the students to pass around when
speaking.
LT-71
LT-71™
LightMic
Transmitter
LES 850iR Classroom Amplification System
850iR CLASSROOM AMPLIFICATION SYSTEM
SPEAKER OUTPUTS
250
400
70
0
1K 1K4
2K
5
4K
6K
+1
0
0
-10
OFF
OFF
OFF
OFF
ON
ON
ON
ON
VOL.
ADJ.
ALD OUT
AUX OUT
VOL.
ADJ.
COMPUTER
AUDIO INPUTS
TV/VCR CD/DVD
800i
X
INPU
T
PAGING INPU
T
ADJ
DC POWER CHARGERS
24VDC
L LR R
SENSOR INPUTS
SENSOR
SHOR
T
1 2
3
4