Extron electronic SI 3CT LP DescriptionSpecifications, Features, dimensional drawings, General

DescriptionSpecifications

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

n4" (10.2 cm) deep low profile metal back can for plenum environments

n3" (7.6 cm) full-range driver with a tuned port

n8 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

nFrequency response: 75 Hz to 17 kHz

n16 watts continuous pink noise, 32 watts continuous program

n170° conical dispersion

nLocking arms for quick ceiling installation

nUL plenum rated

nIncludes C-ring & V-rail kit

nGrille and bezel are available in white only and may be painted to match environment

n5 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

dimensional drawings

9.88"

(25.1 cm)

8.39"

(21.3 cm)

8.77" (22.3 cm)

4.00"

(10.2 cm)

Side View
	0.57"
	(1.44 cm)

Front View Rear View Isometric View