LightSpeed Technologies CNXQ 850 - Manual (Page 2)

Step 3: Connect Speakers and Wire to the
Receiver/Amplifier
A. Connect the wire coming from the speaker wire to the
receiver/amplifier in the following manner based on the
system type:
820/850iR (see figure 4)
i. Unscrew the red and black caps on the binding
post connectors.
ii. Insert the bare red wire into the red hole that was
revealed by unscrewing the red cap and the black
wire into the hole on the black connector.
iii. Screw the caps back down onto the wires until
they are secure.
iv. Make sure the speaker on/off switch next to the
jack (850 only) is switched to the “on” position.
880iR (see figure 5)
i. Unplug the euro-block style connector from the
SPEAKER 1 jack.
ii. Insert the black wire (-) into the left side of the
connector and lock it down by tightening the
screw on top of the connector
iii. Insert the red wire (+) into the right side of the
connector and lock it down in the same manner.
iv. Plug the connector back into the SPEAKER 1 jack
and lock it into the amplifier by tightening the two
side screws.
v. The corresponding speaker volume knob should be
left in the 12:00 position.
vi. Make sure the corresponding on/off switch on the
front of the unit is in the “on” position.
B. Speaker wire should be secured to the wall and con-
cealed if desired with wire mold.
Step 4: Equalization
A. Each receiver/amplifier includes an 8-band equalizer
that allows users to fine-tune their classroom based on
different room characteristics. Figure 6 shows the
factory recommended settings for the CNXQ speaker.
Since all rooms are different, this is only meant as a
starting point and may require some adjustment.
B. The ideal sound is a crisp, clear sound with no feed-
back. Volume levels should be set to a point you can
barely hear your own voice. The goal is to try to repli-
cate the sound of your voice as if the child is sitting
directly in front of you, not to amplify your voice at
high volumes. Because of the classroom size and
constant proximity to the speaker, the system can
product feedback (squealing) if the volume level is
set too high.
C. Return to the “Initial Set-up” section of the user
manual to complete the remaining steps of the
system installation.
SPEAKER
OUTPUTS
250 400 700 1K 1K4 2K5 4K 6K
+10
0
-10
AUX
VOL
ADJ
COMPUTER
AUDIO INPUTS
TV/VCR CD/DVD
800iX
INPUT
PAGING INPUT
DC POWER
CHARGERS 24VDC
L
R
SENSOR INPUTS
SENSOR
SHORT
1 2 3 4
AUX
ALD
VOL
ADJ
ALD
OUT
AUX
OUT
CH A
PRIORITY
R
L
ADJ
SPEAKER
VOLUME
5 6
CH. B/Audio IN
Audio
IN
OFF
EQUALIZER
250 400 600 1K 1K6 2K5 6K3 4K
+10
0
-10
LightSPEED
Start your system installation with the
“System Installation” section of the User Manual
All LightSPEED speakers should be in
accordance with Uniform Building Code, state
and local building department requirements
Figure 4:
RED
CNXQ™ Flat-Panel Ceiling Speaker Installation
Instructions for the 820/850/880iR Receiver/Amplifier
1
2
BLACK
Connecting Speaker Wire to Back of 820/850iR
Connecting Speaker Wire to Back of 880iR
Factory Recommended EQ Setting
Figure 5:
Figure 6: