SpeakerS
SI 3C LP
n
n
3" (7.6 cm) full-range driver with a
tuned port
Full-Range Ceiling SPeakeRS WiTH
4" loW PRoFile BaCk Can
4" (10.2 cm) deep low profile metal
back can for plenum environments
n
n
n
n
Wide 170˚ conical dispersion
8 ohm nominal impedance
Internal driver overload protection
16 watts continuous pink noise,
32 watts continuous program
n
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 3C LP is a full-range ceiling speaker featuring a low profile back
can. 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 applications with lower ceilings and low to medium power
requirements.
FeatureS
Conical Baffle
In small to medium-sized rooms 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 3C 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 3C LP speakers will
ensure consistent volume levels for everyone in the
room while delivering increased intelligibility and
accurate music reproduction.
SI 26CT
SI 3C LP
Full-Range Ceiling Speakers with 4" Low
Profile Back Can
Two-Way Ceiling Speakers with
8" Back Can and Transformer
Ceiling Deck
Shallow Plenum Return Air Space
Fire Sprinkler Piping
HVAC Ducting
Suspended Ceiling
SI 3C LP
SI 3C LP
Full-Range Ceiling
Speakers with
4" Low Profile
Back Can
Full-Range Ceiling
Speakers with
4" Low Profile
Back Can
Room Air Flow
Low Profile Back Can
The SI 3C 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 3C 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.
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
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.
SurFace SPeakerS
SI 3
SI 26
6.5" (16.5 cm) Woofer
1" (2.5 cm) Tweeter
70 Hz to 20 kHz
SI 28
8" (20.3 cm) Woofer
1" (2.5 cm) Tweeter
50 Hz to 20 kHz
3" (7.6 cm) Full Range
75 Hz to 17 kHz
32 Watts Cont. Prog.
150 Watts Cont. Prog.
180 Watts Cont. Prog.
ceiLing SPeakerS
SI 26CT
SI 3C LP
SI 3CT LP
SI 26X
6.5" (16.5 cm) Woofer
3/4" (1.9 cm) Pivoting Tweeter
50 Hz to 20 kHz
6.5" (16.5 cm) Woofer
3" (7.6 cm) Full Range
75 Hz to 17 kHz
3" (7.6 cm) Full Range
75 Hz to 17 kHz
1" (2.5 cm) Pivoting Tweeter
70 Hz to 20 kHz
150 Watts Cont. Prog.
Plenum Rated 8" Back Can
70/100V Transformer
32 Watts Cont. Prog.
Plenum Rated 4" Back Can
32 Watts Cont. Prog.
Plenum Rated 4" Back Can
70/100V Transformer
50 Watts Cont. Prog.
in WaLL SPeakerS
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SI 26W
6.5" (16.5 cm) Woofer
.75" (1.9 cm) Tweeter
40 Hz to 20 kHz
SI 28W
8" (20.3 cm) Woofer
1" (2.5 cm) Tweeter
30 Hz to 20 kHz
60 Watts Cont. Prog.
70 Watts Cont. Prog.
Extron USA-West Extron USA-East Extron Europe
Extron Asia
Extron Japan
Extron China
Extron Dubai
Headquarters
+800.633.9876
+800.3987.6673
+800.7339.8766
+81.3.3511.7655
+81.3.3511.7656 FAX
+400.883.1568
+971.4.2991800
+971.4.2991880 FAX
Inside USA / Canada Only
Inside Europe Only
Inside Asia Only
Inside China Only
+800.633.9876
Inside USA / Canada Only
+1.919.863.1794
+1.919.863.1797 FAX
+31.33.453.4040
+31.33.453.4050 FAX
+65.6383.4400
+65.6383.4664 FAX
+86.21.3760.1568
+86.21.3760.1566 FAX
+1.714.491.1500
+1.714.491.1517 FAX
08-01
68-1506-01
REV. A
© 2008 Extron Electronics. All rights reserved. All trademarks mentioned are the property of their respective owners.
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