B45IRCINS4 V4.0 IR Classmate & IR Classmate
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Soundfield ‒ Reference & Installation Guide
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IR Classmate & IR Classmate
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Soundfield ‒ Reference & Installation Guide B45IRCINS4 V4.0
To avoid expensive damage, check assembled cables for short circuits before
connecting to the IR Classmate amplifier.
Sensors can be connected to either plug on the top left of the amplifier. When wired
properly, the red LED on the sensor will light when the system is turned on.
Connecting the speaker wiring
1
Pass the two speaker cables from behind the
unit through the rectangular hole by the
speaker connectors or through the rubber
grommet with the mains cable. The cables
then follow around the right hand corner of
the unit and through the speaker cable
clamp.
2
Prepare the speaker cable ends.
3
Place each speaker cable pair into the
appropriate connector, observing the
correct polarity.
4
Lay the speaker cables on top of each other
and tighten the cable clamp.
Speaker cables
come from behind
the unit, through
the cable clamp to
the connectors
Speaker
cables
coming
through
hole in
back of
cabinet
The infra red sensors are connected to the IR Classmate amplifier using the provided
co-ax cable and F-connectors. Place the boot on the amplifier end of the cable
before stripping!
1. Cut back 15mm of outer casing. Fold back
the copper braid and remove the foil.
2. Cut back the inner insulator to leave 9mm
of the copper core protruding.
3. Screw the F-connector onto the cable. The
end of the inner insulator should be flush
with the inside of the connector.
4. Trim off any visible braiding.
Screw the plug to either connector on
top of IR Classmate and pull the boot
over the connection.
Fitting the F-connectors
IR Classmate & IR Classmate
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Soundfield
IR Classmate & IR Classmate
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Soundfield
Wall mounted speakers
Wall mounted speakers must be
mounted horizontally to allow them to be angled down.
Ceiling mounted speakers
When fitting ceiling tile speakers always ensure that
cabling or other loose items are not left across the back of the speaker tile ‒ anything
left in contact with the speaker tile will cause distortion or buzzing.
The ceiling tile speakers supplied by Connevans may be 4 Ohms (4
speaker system) or 8 Ohms (2 speaker system) and are wired in the
same way as the wall speakers.
Speaker wiring
Speaker wiring ‒ one cable run down each side of the
classroom wiring 2 (or 3) speakers in parallel. It is important
to maintain the correct polarity when connecting the
cable so we suggest connecting the black trace wire to the
black terminal(!)
(Each speaker is 4 Ohms thus for 4
speakers we now have 2 Ohms on each cable).
The IR Classmate has 4 terminals ‒ red, black, black, red.
Connect the two cable runs, one to the left pair and one to
the right pair, again maintaining correct polarity ie black
trace wire to the black terminals.
(The terminals are wired internally to connect the two cable
runs in series making the load on the amplifier 4 Ohms. The
actual amplifier connections are the 2nd and 4th terminal
as viewed from below, which you would need to know if
you wanted to test the amplifier with just one speaker)
The cable is white with a black stripe along one wire. The
white only wire should always be connected to the red
terminals and the black stripe wire always to the black
terminal.
Four speaker wiring
red black
red black
red black
red black
red black
red black
red black
red
black black
red black
red black
red black
red
Six speaker wiring
red
black black red
Speaker Mounting
6. Install the system
IR Classmate wall mounting
There is an separate A3 sheet which has a template and guidance
for mounting the IR Classmate wall unit. Using this template makes
drilling the correct holes simple and prevents drill debris from
contaminating the IR Classmate wall unit. Do not place the unit on
the wall until all drilling and dust making activities have been completed.
