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  9. LightSpeed Technologies CNXQ User manual

LightSpeed Technologies CNXQ User manual

CNXQ™ Flat-Panel
Ceiling Speaker Speaker Installation Instructions
Step 1: Selecting Speaker Location
One CNXQ™ Flat Panel Ceiling Speaker is designed for rooms smaller
than 1200 sq. ft. and with a ceiling height of 9–12 feet.
Before starting the system installation, speaker placement needs to be
determined. This speaker is designed to be mounted in the ceiling in or
near the middle of the classroom (See figure 1.). The speaker lays directly
into the acoustic ceiling grid, so locate the tile that is approximately in
the center of the classroom.
Step 2: Installing and Connecting the Speaker Wire
A. Identify a suitable location for the receiver/amplifier where it is
easily assessable, close to a power outlet, and at least 6 feet away
from any computers.
B. Remove the ceiling tile from the ceiling that was identified in
Step 1.
C. Set the ceiling tile on a flat work surface with patterned side facing
down. The dimensions of the CNXQ Speaker are 2 ft. x 2 ft. Using a
straight edge, cut 24” off the end of a standard 2’ x 4’ ceiling tile as
shown in Figure 2. (If the ceiling tile grid is 2’ x 2’, simply remove
the tile and replace with the CNXQ speaker).
D. Locate the coil of speaker wire. To connect the wire to the speaker,
press down on the colored terminals on the back of the speaker,
insert the wire and release the tab to clamp it in place. Insert the
black wire into the black-tabbed terminal and the red wire into the
red-tabbed terminal.
E. Place the other end of the wire up through the opening in the
ceiling and route over the ceiling tiles and back down the wall to
the receiver/amplifier. (NOTE: when routing wire overhead, it is
important to always follow local building and electrical codes,
securing wire as required). Do not connect the wires to the receiver
amplifier yet.
F. If installing the speaker into a 2’ x 4’ suspended ceiling, snap the
included cross tee into the suspended ceiling grid. Locate the slots
in the grid at the center of the 2’ x 4’ area. Insert one end of the tee,
then the other so it locks into place.
G. The speaker has an earthquake strap connected to the back so it
can be tied off to the ceiling structure for safety purposes. Unscrew
one end of the wire from the back of the speaker to be tied off to
the ceiling supports. If local building codes do not require the use
of an earthquake strap and it is not being used, you should
completely remove the strap from the speaker so that does not
create unwanted vibration.
H. Lay the CNXQ directly onto the ceiling tile grid as shown in Figure
3. Secure the speaker to the ceiling with the earthquake strap as
required by local building codes. Speaker wire should also be
secured to the ceiling. DO NOT lay the speaker wire across the back
of the speaker to avoid unwanted vibration.
I. Insert the cut tile back into the ceiling.
Start your system installation with the
“System Installation” section of the User Manual
>>>
>>>
All LightSPEED speakers should be installed in
accordance with Uniform Building Code, state
and local building department requirements.
>>>
>>>
>>> Room Installation: Top View
figure 1:
Throw
Away
Remaining
Ceiling Tile
>>> Cutting a 2’ x 4’ Ceiling Tile
figure 2:
CNXQ
>>> Installing the Speaker
figure 3:
24” Cut with Straight Edge
Ceiling Tile Grid
CNXQ Speaker
Cross Tee
Ceiling Tile
CNXQ™ Flat-Panel
Ceiling Speaker Speaker Installation Instructions
>>> Connection of Speaker Wire to Back of 780iR
figure 5:
>>> Connection of Speaker Wire to Back of 750iR
figure 4:
1 2 3 45 6
123456
ADJ
FM OUT
ADJ
DC
POWERMIC CHARGE
FILTERS
EQUALIZATION
LOW MID HIGH
TV/VCR
SENSOR INPUTS
SENSOR
SHORT
SPEAKERS
SPEAKER
OUTPUT
VOLUME AUX OUT
CD/TAPE COMPUTER AUX
AUDIO INPUTS
Start your system installation with the
“System Installation” section of the User Manual
>>>
>>>
All LightSPEED speakers should be installed in
accordance with Uniform Building Code, state
and local building department requirements.
>>>
>>>
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:
750iR (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 is
switched to the “on” position.
780iR (see figure 5)
i. Insert the 1/4” plug into the SPEAKER OUTPUT 1 jack on the
back of the receiver/amplifier.
ii. The speaker volume knob should be left at the 12:00 position
for most applications.
iii. Make sure the corresponding speaker on/off switch on the
front panel is set to the “on” position.
B. Speaker wire should be secured to the wall and concealed 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 5 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 feedback. Volume
levels should be set to a point you can barely hear your own voice.
The goal is to try to replicate 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 “Step 4: Receiver/Amplifier” of the install section of
the user manual to complete the remaining steps of the
system installation.
>>> Factory Recommended EQ Settings
1
2
RED
BLACK
figure 6:
EQUALIZER
250 400 600 1K 1K6 2K5 6K3
4K +10
0
-10

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