Extron Electronics SI 3CT LP User Manual

SI 3CT LP

User’s Guide

Frame Construction Ceiling Installation

1

Take the cutout template from the packaging box and
punch out along the larger perforated circle. Place the
cutout template against the ceiling and trace along the inside
circle. Carefully cut out the ceiling material along the circle.

Ceiling Speaker

Cut material.

c. Insert the conduit(s) into the knockout opening(s) and
secure the conduit to the cover with the locking nut.

d. Pull the speaker wires from the conduit, strip 0.2” (5 mm)
from the wire ends (do not tin the wires), and secure the
wires into the 4-pole captive screw connector. To connect
speakers in parallel, see the wiring diagram below.

Trace template.

2

The side terminal cover, as illustrated in step 3f, must first
be removed before wiring the speaker.
Loosen the single top screw of the side terminal cover and
pull the side terminal cover straight out. See the illustration
below.

Loosen
screw.

Side View of Input Terminal

Side Terminal
Cover

3

a. Remove the top terminal cover (see the illlustration in

step 3f) by loosening (do not remove) both top screws,
sliding the top terminal cover away from the screws, and
removing the cover, as shown here.

70 V To Speakers

Power Amplifier

Speaker 1 Speaker 2 Speaker 3

e. Bring the speaker up to the bottom of the hole in the
ceiling.

f. Plug the wired connector from step 3d into the speaker’s
audio input connector. Secure the top terminal cover
with the two top screws that were loosened in step 3a;
hook the side terminal cover to the top terminal cover; and
secure the side terminal cover in place with the screw that
was loosened in step 2.

See NOTE below.

Top Terminal

Side Terminal
Cover

4-pole Captive

Screw Connector

Cover

N Installation in a plenum-rated environment
requires a wire gauge of 14 AWG to 18 AWG.

Loosen
two screws.

Top Terminal
Cover

b. Remove the knockout(s) from the top terminal cover
depending on the direction from which the conduit(s) will
be entering the cover.

4-pole Captive

Screw Connector

33-1351-01

Rev. B

IN

LOOP IN LOOP

Front View of Input Terminal

68-1263-01 Rev. B

09 07

1

SI 3CT LP

User’s Guide

cont’d

4

Loosen the four screws on the front baffle (counter
clockwise) 1/2 turn. Insert the speaker in the ceiling hole,
then tighten the screws (clockwise) until the dog legs clamp
the speaker to the ceiling. See the following illustration.

CAUTION

Do not overtighten screws.

5

Connect a secondary support line from the seismic tab to a
secure support point, as shown below.

Ceiling Speaker

Suspended Ceiling InstallationFrame Construction Ceiling Installation,

1

Remove the ceiling tile where the speaker is to be installed.

2

Cut the hole in the tile (see step 1 on page 1).

3

Bring the speaker cable through the hole of the cut tile,
then reinstall the tile.

4

Remove the adjacent tile. Place 2 V-rails and 1 C-ring
across the tile where speaker is to be installed. Bring the
speaker up to the bottom of the hole in the ceiling tile.

C-ring

Seismic Tab &
Support Line

70 Volt

100 Volt

Apply 4 pieces of
black putty (supplied),

Adjusting the Tap Selector.

Set the rotary tap selector (shown above) to the proper
position.

CAUTION

Install the speaker grille.

Do not turn the tap selector to the 8 Ω position

when using 70 V / 100 V lines.

equally spaced 90° apart,
to the upper inside edge
of the grille.

V-rail

5

Connect the wires to the speaker terminal connector (see
step 3 on page 1).

6

Loosen the four screws on the front baffle (counter
clockwise) 1/2 turn. Then tighten the screws (clockwise)
until the dog legs clamp the speaker to the ceiling.

CAUTION

Do not overtighten screws.

7

Connect a secondary support line from the seismic tab to
a secure support point (see step 5 of Frame Construction
Ceiling Installation on this page).

8

Set the rotary tap selector and install the grille (see step 5 of

Frame Construction Ceiling Installation on this page).

2

User’s Guide

SI 3CT LP

Ceiling Speaker

Painting the Speaker Baffle

Tear along the smaller perforated line of the cutout
template marked as a paint shield. Push it into the front
baffle of the speaker. Paint the front. Remove the paint
shield after the paint has dried.

Application diagram

Extron
SI 3CT LP

PC

VGA w/

Audio Cable

DVD/VCR Combo

Composite
Audio RCA

Variable

REMOTE

10V

INPUTS

VOL/MUTE

(MONO)

L

POWER

R

12V
3A MAX

Projector

MPA 181T

LISTED
1T23
I.T.E.

US

COM 70V

OUTPUTS

C

70V

R

4/8 Ohms

(MONO)

L

Low Profile Ceiling
Speakers

Extron
MPA 181T

Mini Power Amplifier

MUTE

VCM 100

VOLUME

Extron
VCM 100 AAP

Volume/Mute Controller

Specifications

Acoustic & Electrical

Speaker type................................. Low profile ceiling speaker with metal back can

Frequency response..................... 75 Hz to 18 kHz, -10 dB, half space

Power capacity.............................. 16 W continuous pink noise

32 W continuous program

Nominal sensitivity........................ 83 dB, 1 W, 1 m, 16 W tap, half space

Nominal coverage angle............... 170° conical coverage

Nominal impedance ..................... 8 ohms

Rotary switch taps........................ 70V: 16 W, 8 W, 4 W, 2 W, 1 W

100V: 16 W, 8 W, 4 W, 2 W

Driver............................................ 3” (76 mm) full range paper cone with moisture

resistant coating

Input/output connector.................. (1) 5 mm captive screw connector, 4-pole for input

and loop-through

General

Package ....................................... 2 speakers (1 pair)

Temperature/humidity.................... Storage: -40 to +158 °F (-40 to +70 °C) /

10% to 90%, noncondensing
Operating: +32 to +122 °F (0 to +50 °C) /
10% to 90%, noncondensing

Mounting....................................... Ceiling mountable with included hardware: V-rails for

2’ x 4’ (600 mm x 1200 mm) ceiling tiles, and C-rings

Enclosure type.............................. Formed steel back can; high impact, fire-resistant

(UL94V-0), polystyrene plastic baffle/rim

Enclosure outer dimensions.......... 4.0” H x 9.9” diameter (102 mm x 251 mm diameter)

Cutout dimensions........................ 8.82” diameter (224 mm diameter)

Product weight.............................. 6 lbs (2.72 kg) each speaker

Shipping weight............................. 22 lbs (9.98 kg) per pair w/ mounting kit package

Listings ......................................... UL 2043, UL1480

Compliances ................................ CE, NFPA90, NFPA70A

Warranty ....................................... 5 years parts and labor

NOTE: All nominal levels are at ±10%.
NOTE: Specifications are subject to change without notice.

Packaging

V-rails (4)

Mounting Screws
& Putty

Speakers

C-rings

Speaker Grilles

www.extron.com

Extron Electronics, USA

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Anaheim, CA 92805

800.633.9876 714.491.1500
FAX [phone]

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135 Joo Seng Rd. #04-01
PM Industrial Bldg., Singapore 368363
+800.7339.8766 +65.6383.4400
FAX [phone]

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Beeldschermweg 6C
3821 AH Amersfoort, The Netherlands
+800.3987.6673 +31.33.453.4040
FAX [phone]

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Kyodo Building, 16 Ichibancho
Chiyoda-ku, Tokyo 102-0082
Japan
+81.3.3511.7655 FAX [phone]

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