Extron electronics BCK SF 3CT LP, BCK SF 3C LP Setup Manual
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BCK SF 3CT LP and BCK SF 3C LP • Setup Guide
This setup guide contains installation information about the BCK SF 3CT LP, and BCK SF 3C LP. When fully assembled with
a DAK SF 3CT or DAK SF 3C they become a fully functioning SF 3CT LP or SF 3C LP Soundeld® XD full range speaker,
respectively. These speakers can be installed by a single trade installation procedure or by a multitrade installation procedure (see
the SF 3C LP and SF 3CT LP User Guide, available at www.extron.com, for details). The entire assembly is plenum rated.
WARNING: Potential risk of severe injury. Installation and service must be performed by authorized personnel only.
AVERTISSEMENT : Risque potentiel de blessure grave ou de mort. L’installation et l’entretien doivent être effectués
uniquement par un technicien qualié..
NOTE: Installation of conduit and conduit adapters must conform to all applicable building codes and local ordinances.
1. Disconnect power from all devices.
2. Verify the space where the system will be
installed — Ensure that there is sufficient clearance
above the ceiling tile for the unit to be installed.
3. Cut a hole for the speaker — Use the provided
cutout template to outline the hole to be cut in the
ceiling tile, as described below.
NOTE: For hard ceiling installations skip steps a
through e and use the cutout template to cut a
hole in the ceiling.
a. Remove the ceiling tile, and draw diagonal lines
across it from opposite corners to locate its center.
Mark the intersection where the lines cross.
b. Position the center hole of the cutout template
directly over the center of the tile, marked in
step2a.
c. Trace a circle on the ceiling tile around the cutout
template.
d. Cut out the circle traced in the ceiling tile.
e. Replace the ceiling tile in the ceiling.
4. Attach two V-rails and one C-ring acoss the tile and
above the hole cut in step 3, as described below.
NOTE: For hard ceiling installations:
• Fold one C-ring assembly in half and insert it
through the hole in the ceiling.
• Unfold the C-ring and center it over the hole
with the at side down.
• V-rails are not needed.
b. Remove a ceiling tile adjacent to the tile with the
hole.
c. Place both assembled V-rails on the cut ceiling tile
and position them equally on either side of the hole.
The ends of the V-rails go over the ceiling grid.
d. Position the C-ring assembly on the two V-rails so
that the C-ring is centered over the hole.
C-ring
a. Assemble two V-rail half sections so that they
become one single piece by fitting the tab of one
end into the slot of the other end. Open the V-rail
until it locks together, as shown in the following
-rail
illustrations. Repeat this procedure for the other
V-rail.
e. Secure the C-ring to the V-rails using two screws.
5. Route the speaker wires through the ceiling tile hole.
1
BCK SF 3CT LP and SF 3C LP • Setup Guide (Continued)
Wiring Multiple Speakers Using Loop-through
6. Configure the locking arms for thicker ceilings
(optional).
Three speaker locking arms, as shown below, are used
to secure the speaker to ceiling tiles up to 2.5 inches
(63 mm) thick. The locking arms are equipped with
removable inserts that accommodate ceiling tiles of up
to 1.5 inches
(3.81 mm) in thickness. For ceiling tiles thicker than
1.5 inches, the locking arm inserts must be removed.
To remove the inserts:
a. Using a screwdriver, rotate the locking arm so that
the insert can be accessed.
b. Use a small screwdriver to pry and separate the
insert from the locking arm, as shown below.
c. Repeat this process for the remaining two locking
arms.
d. Rotate all three locking arms back into the speaker.
7. Configure the cable/conduit access plate and
captive screw connector, as described below.
a. The cable/conduit access plate has one alternate
hole available covered by a knockout. This hole
may be used for loop out when using conduit. If this
knockout needs to be removed, do the following:
i. With the cable/conduit access plate still
attached to the speaker, place the tip of a
flat-head screwdriver against the notch of the
knockout.
ii. Lightly tap the screwdriver with a hammer to
remove the knockout.
b. Loosen the two side cable/conduit access plate
screws and remove the cover.
Cable/conduit
Access Plate
Screws (2)
Cable
Clamp
Alternate
Knockout
c. Configure the cable/conduit access plate.
• When not using conduit: Route the speaker
wires through the cable clamp.
• When using conduit: Remove the cable clamp
and install the conduit into the access plate
opening. Secure the conduit to the plate with
the locking nut and pull the speaker wires from
the conduit.
d. Strip 0.2 inches (5 mm) from the wire ends.
e. Use one of the following three methods to attach
the speaker wires to the captive screw connector
(depending on the configuration).
1
When a chain of speakers is wired this way,
disconnecting one speaker removes power from all
downstream speakers.
Power Amplifier
Wiring Multiple Speakers in Parallel
2
When a chain of speakers is wired this way,
disconnecting one speaker does not remove power
from the remaining speakers in the chain.
Power Amplifier
(Red)
(Black)
(Red)
(Black)
+
–
–
IN
LOOP
IN
Speaker 1
+
–
–
IN
LOOP
IN
Speaker 1
(Red)
(Black)
+
LOOP
+
LOOP
Speaker 2
(Red)
(Black)
Speaker 2
–
–
LOOP
IN
–
–
LOOP
IN
(Red)
(Black)
+
+
IN
LOOP
(Red)
(Black)
+
+
IN
LOOP
2
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