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Extron Electronics SI 26CT User Guide User Manual

Si 26ct, Ceiling speaker user’s guide, Frame construction ceiling installation

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Power Amplifier

Speaker 1

Speaker 2

Speaker 3

To Speakers

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 bottom of the ceiling and
trace the inside of it. Carefully cut out the ceiling material
along the circle.

3

Replace the top cover and tighten the screws.
Insert the speaker through the bottom of the hole in
the ceiling.

4

5

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.

Do not over tighten screws

.

Connect a secondary support line from the seismic tab to a
secure support point. Set the rotary tap selector and install
the speaker grille.

Specifications:

2

CAUTION

Adjusting the Tap Selector

Seismic Tab &
Support Line

SI 26CT

Ceiling Speaker

User’s Guide

Cut Material

Remove the top cover to access the speaker connector.
Attach the speaker wires to the 4-pole captive screw
connector (supplied). Insert the 4-pole captive
screw plug into the connector on back of the speaker.
Install the conduit and secure the connections.

68-1065-01

Rev. B

06 06

Acoustic & Electrical

General

Speaker type.................................. 2-way, low profile ceiling speaker with metal back can
Frequency range........................... 70 Hz to 20 kHz, -10 dB, half space
Power capacity.............................. 150 W continuous program

75 W continuous pink noise

Nominal sensitivity...................... 89 dB, 1 W @ 1 m, 60 W tap, half space
Nominal coverage angle.............. 110° conical coverage
Nominal impedance .................... 16 ohms
Crossover frequency................... 3.5 kHz
Rotary switch taps....................

70V: 60 W, 30 W, 15 W, 7.5 W, 16 ohms direct

100V: null, 60 W, 30 W, 15 W, 16 ohms direct

Woofer........................................... 6.5" (165 mm) polypropylene cone

with moisture resistant coating

Tweeter.......................................... 1.0" (25 mm) titanium dome
Overload protection....................... Full range power limiter with the 16 ohm direct input

only, protecting the tweeter, woofer, and crossover

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

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.

Parallel Hookup Wiring Diagram

16

60

W

30

W

15W

7.5W

15W

16

30W

60

W

70

V

100

V

Apply 4 pieces of black

putty (supplied), equally

spaced 90° apart, to the

upper inside edge of the

grille.

Conduit

Enlarged to
Show Detail

Cover

4-pole Captive

Screw Connector

From
Power
Amplifier

To Speaker

Trace template.