Extron electronic SI 3CT LP - Manual (Page 2)

deScriPtion SPeciFicationS
Front View
Side View
SI 3CT LP
Rear View Isometric View
9.88"
(25.1 cm)
8.39"
(21.3 cm)
8.77"
(22.3 cm)
4.00"
(10.2 cm)
0.57"
(1.44 cm)
dimenSionaL draWingS
The Extron SI 3CT LP is a full-range ceiling speaker featuring a 4" (10.2 cm)
LP - Low Profile metal back can for use in plenum ceilings. The low profile
speaker is an excellent choice for ceiling installations with tight above-the-
ceiling tile space issues, such as air handling units installed close to the
ceiling. The 3" (7.6 cm) full-range driver features an incredibly wide frequency
response of 75 Hz to 17 kHz, 16 watts continuous pink noise or 32 watts
continuous program capacity, and an extremely wide conical dispersion of
170°. The SI 3CT LP is ideal for small to medium classrooms with lower ceilings
and low to medium power requirements.
The SI 3CT LP features an exclusive conical baffle that provides a wider room
coverage pattern, which is important for rooms with low ceilings. This design
reduces “beaming” of mid and high frequencies directly under the speaker.
Voice intelligibility is critical for classrooms and many other applications, and
the SI 3CT LP provides excellent voice clarity without compromising music
reproduction.
The SI 3CT LP offers both direct 8 ohm or 70/100 volt operation with a
behind-the-grille, six position power selector switch. In the 8 ohm direct
position, this speaker is designed for use with our MPA 122 Integrated Mini
Power Amplifier in small to medium low ceiling classrooms requiring two to
four wide dispersion speakers for maximum room coverage.
Many system designers desire 70/100 volt operation for multiple speakers
and long speaker wire runs when the amplifier is remotely located. For small
to medium classrooms, the SI 3CT LP is designed for use with the MPA 181T
70 volt Integrated Mini Power Amplifier. For room balancing with 70/100 volt
systems, the behind-the-grille power selector switch allows for 16, 8 ,4, 2, and
1 watt settings in 70 volt operation and 16, 8, 4, and 2 watt settings for
100 volt operation.
Four locking arms allow for a fast, secure hard ceiling installation. The
SI 3CT LP includes mounting hardware to facilitate installation in a suspended
T-bar ceiling. It features a white grille and bezel that can be painted to match
the architectural elements of the environment.
FeatureS
n 4" (10.2 cm) deep low profile metal back can for plenum environments
n 3" (7.6 cm) full-range driver with a tuned port
n 8 ohm direct or 70/100 volt operation on a 6 position,
behind-the-grille selector:
- 8 ohm direct
- 70 volt: 16, 8, 4, 2, and 1 watt selectable
- 100 volt: 16, 8, 4, and 2 watt selectable
n
Frequency response: 75 Hz to 17 kHz
n 16 watts continuous pink noise, 32 watts continuous program
n 170° conical dispersion
n Locking arms for quick ceiling installation
n UL plenum rated
n Includes C-ring & V-rail kit
n Grille and bezel are available in white only and may be painted
to match environment
n 5 year parts and labor warranty
Audio/Acoustic And electricAl
Speaker type ................................... Low profile ceiling speaker with metal
back can
Frequency response ........................ 75 Hz to 17 kHz, -10 dB, half space
Power capacity ................................ 16 W continuous pink noise
32 W continuous program
Nominal sensitivity .......................... 83 dB SPL, 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
100 V: null, 16 W, 8 W, 4 W, 2 W
Driver .............................................. 3" (76 mm) paper cone
Input connector ............................. (1) 5 mm captive screw connector, 4 pole
for 1 input and 1 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 ................................ Metal back can; high-impact, fire-resistant
(UL94V-0) plastic baffle/rim
Enclosure outer dimensions ............ 4.0" H x 9.9" diameter
(102 mm x 251 mm diameter)
Cutout dimensions .......................... 8.937" diameter (227 mm diameter)
Product weight ............................... 6 lbs (2.7 kg) each
Shipping weight ............................. 22 lbs (10 kg) per pair with mounting kit
package
Listings ............................................ UL 2043, UL1480
Compliances ................................... CE, NFPA90, NFPA70A
Warranty ........................................ 5 years parts and labor
NOTE: All nominal levels are at ±10%.
Model Version Description Part Number
SI 3CT LP Ceiling Speakers - 4" Back Can, Pair ................ 42-103-03