SI 3 Retired

Compact Full-Range Surface Mount Speakers
Key Features
  • Compact full-range speaker
  • 8 ohm nominal impedance
  • 3" (7.6 cm) full-range driver with a tuned bass reflex port
  • Frequency response: 75 Hz to 18 kHz
  • 16 watts continuous pink noise, 32 watts continuous program
  • Exclusive V-Lock® mounting system included, provides horizontal and vertical speaker mounting
The Extron SI 3
Model Version Description Part #
 SI 3 Surface Mount - 3" Driver, Black, Pair 42-105-02 Retired
 SI 3 Surface Mount - 3" Driver, White, Pair 42-105-03 Retired

This product has been retired.
Suggested Replacement
SM 3

The Extron SI 3 compact surface mount speaker features a 3" (7.6 cm) full-range driver coupled to an exclusive conical baffle that enhances coverage throughout the listening area. The driver features an incredibly wide frequency response of 75 Hz to 18 kHz, and 16 watts continuous pink noise and 32 watts continuous program capacity. An internal overload protection circuit prevents driver damage due to excessive input levels.

This System INTEGRATOR® Series speaker is ideally suited for small to medium classrooms and conference rooms where surface mount speakers are desired, but wall space for speaker placement is limited.


The exclusive conical baffle provides a broad dispersion of the mid and high frequencies in order to optimize room coverage from a compact speaker. Voice intelligibility is critical for classrooms and many other applications, and the SI 3 provides excellent voice clarity without compromising music reproduction.


Included with the SI 3 is Extron's exclusive Patented V-Lock® mounting hardware, which facilitates easy, secure installations, and allows for wide 60° horizontal and 55° vertical travel as well as 360° rotation. This flexible design allows the speakers to be placed vertically or horizontally to meet a variety of placement needs.


The SI 3 is sold in pairs and is available in a black or white finish, and includes a 5 year parts and labor warranty.