Extron electronic Speaker SI 3C LP User Manual

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  
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Wide 170˚ conical dispersion  
8 ohm nominal impedance  
Internal driver overload protection  
16 watts continuous pink noise,  
32 watts continuous program  
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Locking arms for quick ceiling  
installation  
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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.  
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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.  
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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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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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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  
8W  
2
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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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