SpeakerS
SI 3CT LP
n
n
3" (7.6 cm) full-range driver with a
tuned port
Full-Range Ceiling SPeakeRS WiTH
4" (10.2 cm) deep low profile metal
back can for plenum environments
4" loW PRoFile BaCk Can and TRanSFoRmeR
n
n
Wide 170˚ conical dispersion
8 ohm direct, 70 volt, and
100 volt operation
n
n
n
6 position, behind-the-grille
power selector
16 watts continuous pink noise,
32 watts continuous program
Locking arms for quick ceiling
installation
n
n
n
UL plenum rated
Includes C-ring & V-rail kit
5 year parts and labor warranty
The Extron SI 3CT LP is a full-range ceiling speaker featuring a low profile back
can and transformer. A full-range driver, coupled to an exclusive conical baffle
delivers very wide room coverage as well as wide frequency response for accurate
voice and music reproduction. This System Integrator® Series speaker is ideally
suited for small to medium classrooms with lower ceilings and low to medium
power requirements.
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FeatureS
Conical Baffle
In small to medium-sized classrooms with low
ceilings, midrange and high frequencies are
likely to be confined or "beamed" within an area
directly beneath each ceiling speaker. As a result,
some listeners will hear the audio clearly while
others may not.
To address this issue, the SI 3CT LP has been
designed with a 3 full-range driver that is
"
acoustically coupled to an Extron exclusive conical
baffle. This baffle serves as a waveguide to help
create a wide dispersion profile of 170°. With this
very broad conical spreading of the mid and high
frequencies, a system of SI 3CT LP speakers will
ensure consistent volume levels for everyone in the
room while delivering increased intelligibility and
accurate music reproduction.
SI 26CT
SI 3CT LP
Two-Way Ceiling Speakers with
8" Back Can and Transformer
Full-Range Ceiling Speakers with 4" Low
Profile Back Can and Transformer Can
Ceiling Deck
Shallow Plenum Return Air Space
Fire Sprinkler Piping
HVAC Ducting
Suspended Ceiling
SI 3CT LP
SI 3CT LP
Full-Range Ceiling
Speakers with
Full-Range Ceiling
Speakers with
4" Low Profile Back
Can and Transformer
4" Low Profile Back
Can and Transformer
Room Air Flow
Low Profile Back Can
The SI 3CT LP features a special 4" low profile back can for installation in plenum ceilings where the presence of HVAC ducting, fire
sprinkler piping, or limited spacing above the suspended ceiling would hamper placement of a ceiling speaker with a more conventional
back can such as the SI 26CT. The specially designed 3" full-range driver of the SI 3CT LP works together with the low profile back
can to deliver wide frequency response as well as wide conical dispersion for optimal sound reproduction in classrooms and other
environments.
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PoLar graPhS – 1/3 octaVe, horizontal
100.00 Hz
125.00 Hz
250.00 Hz
315.00 Hz
160.00 Hz
200.00 Hz
400.00 Hz
500 .00 Hz
0 Deg
0
0 Deg
0
-30
-30
30
30
-10
-10
-60
-60
60
60
-20
-30
-20
-30
-90
-90
90
90
630.00 Hz
800.00 Hz
1.60 kHz
2.00 kHz
1.00 kHz
1.25 kHz
2.50 kHz
3.15 kHz
0 Deg
0 Deg
-30
-30
30
30
0
0
-10
-20
-30
-10
-20
-30
-60
-60
60
60
-90
-90
90
90
4.00 kHz
5.00 kHz
10.00 kHz
12.50 kHz
6.30 kHz
8.00 kHz
16.00 kHz
20.00 kHz
0 Deg
0 Deg
-30
-30
30
30
0
0
-10
-20
-30
-10
-20
-30
-60
-60
60
60
-90
-90
90
90
Specifications are subject to change without notice.
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reSPonSe graPhS – Frequency and imPedance
SPL VS. Frequency – 1 Watt @ 1 meter reSPonSe, haLF SPace (2π)
dBSPL
100
90
80
70
60
50
40
30
20
20 Hz
50
100
200
500
1K
2K
5K
10K
20K
SPL VS. Frequency – horizontaL oFF-axiS reSPonSe, haLF SPace (2π)
dBSPL
100
90
80
70
60
50
40
30
20
0 Degrees
10 Degrees
20 Degrees
30 Degrees
40 Degrees
20 Hz
50
100
200
500
1K
2K
5K
10K
20K
imPedance VS. Frequency
Ohm
40
20
10
5
20 Hz
50
100
200
500
1K
2K
5K
10K
20K
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SurFace SPeakerS
SI 28
SI 26
6.5" (16.5 cm) Woofer
1" (2.5 cm) Tweeter
70 Hz to 20 kHz
SI 3
8" (20.3 cm) Woofer
3" (7.6 cm) full range
75 Hz to 17 kHz
1" (2.5 cm) Tweeter
50 Hz to 20 kHz
32 Watts Cont. Prog.
180 Watts Cont. Prog.
150 Watts Cont. Prog.
ceiLing SPeakerS
SI 26CT
6.5" (16.5 cm) Woofer
1" (2.5 cm) Pivoting Tweeter
70 Hz to 20 kHz
150 Watts Cont. Prog.
Plenum Rated 8" Back Can
SI 3CT LP
SI 26X
3" (7.6 cm) Full Range
75 Hz to 17 kHz
6.5" (16.5 cm) Woofer
50 Hz to 20 kHz
32 Watts Cont. Prog.
Plenum Rated 4" Back Can
50 Watts Cont. Prog.
in WaLL SPeakerS
8W
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SI 28W
8" (20.3 cm) Woofer
1" (2.5 cm) Tweeter
30 Hz to 20 kHz
SI 26W
6.5" (16.5 cm) Woofer
.75" (1.9 cm) Tweeter
40 Hz to 20 kHz
70 Watts Cont. Prog.
60 Watts Cont. Prog.
Extron Electronics, USA
1230 South Lewis Street
Anaheim, CA 92805
800.633.9876 714.491.1500
FAX 714.491.1517
Extron Electronics, Europe
Extron Electronics, Asia
135 Joo Seng Rd. #04-01
PM Industrial Bldg.
Extron Electronics, Japan
Beeldschermweg 6C, 3821 AH Amersfoort
The Netherlands
Kyodo Building, 16 Ichibancho
Chiyoda-ku, Tokyo 102-0082
Japan
+800.3987.6673 +31.33.453.4040
FAX +31.33.453.4050
Singapore 368363
+65.6383.4400 FAX +65.6383.4664
+81.3.3511.7655 FAX +81.3.3511.7656
07-05
68-1158-01
REV. C
© 2007 Extron Electronics. All rights reserved. All trademarks mentioned are the property of their respective owners.
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