SI 3CT LP Retired

Full-Range Ceiling Speakers with 4" Low Profile Back Can and 70/100 V Transformer
Key Features
  • 4" (10.2 cm) deep low profile metal back can for plenum environments
  • 3" (7.6 cm) full-range driver with a tuned port
  • 8 ohm direct or 70/100 volt operation on a 6 position, behind-the-grille selector
  • Frequency range: 75 Hz to 17 kHz
  • 16 watts continuous pink noise, 32 watts continuous program
  • Locking arms for quick ceiling installation
The Extron SI 3CT LP
Model Version Description Part #
 SI 3CT LP Ceiling - 4" Back Can, Transformer, Pair 42-103-03 Retired

This product has been retired.
Suggested Replacement
SF 3CT LP

The Extron SI 3CT LP is a full-range ceiling speaker featuring a 4" (10.2 cm) 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 a wide frequency range of 75 Hz to 17 kHz, 16 watts continuous pink noise and 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 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 152 Plus 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 401 70/100 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.