SF 228T Plus
8" Two-Way SoundField Ceiling Tile Speaker
The Extron SoundField® SF 228T Plus is a two-way ceiling tile speaker for low impedance and 70 volt/100 volt systems. This innovative design features a low profile, 2' x 2' (610 mm x 610 mm) by 5.41" (137 mm) deep enclosure that is UL 2043 plenum rated, weighs less than 20 pounds (9 kg), and drops directly into standard US style suspended ceilings, providing quicker installations. The two-way ported design includes an 8" (203 mm) woofer and a 1.1" (28 mm) silk dome tweeter in a coaxial configuration that provides a smooth frequency range of 47 Hz to 22 kHz for music and speech reproduction. The SF 228T Plus offers 90 watts continuous pink noise and 180 watts continuous program output. This speaker is sold in pairs and is designed for fast and easy installation into sound systems requiring high quality, wide bandwidth audio playback.
Low Profile Enclosure
Easily fits within restricted height environments
UL 2043 Rated Enclosure
Approved for installation within a plenum airspace
Tuned Bass Port
Provides low frequency extension for high impact audio playback
2' x 2' Drop-in Ceiling Tile Speaker
Designed for use in US style suspended ceilings
8" Long Throw Woofer & 1.1" Silk Dome Tweeter
Ideal for powerful low frequencies and smooth high frequencies
White Perforated Grille
Matches most HVAC vents for a visually discreet appearance
Exceptional Sonic Performance for Pro AV
The SF 228T Plus delivers full frequency range and exceptional sonic performance with an 8" coaxial two-way driver in a design optimized for easy installation into US style suspended ceilings. It provides an extended low frequency range with deeper bass output than typical ceiling speakers. This low frequency extension is achieved through a long-throw woofer mated to a tuned-port enclosure, plus a large transformer for distortion-free low frequency output.
The front panel design provides the rigidity and stiffness to minimize enclosure vibrations that would otherwise compromise sound quality. A lightweight housing is utilized to create an enclosure that balances acoustic performance with installation safety. The SF 228T Plus weighs less than 20 pounds (9 kg), allowing the speaker to meet ceiling-mounting codes without additional permits when installed in classrooms.
Integrator-friendly features include an internal tap selector switch, cable/conduit access cover with secondary knockout, and splicing connectors that make it easy to connect speaker wires without tools.
The SF 228T Plus offers 70 volt or 100 volt operation and provides switch selectable power taps for 64, 32, 16, and 8 watts. The transformer can be bypassed for 8 ohm operation.
For easy installation, the SF 228T Plus drops into the same space as a standard 2' x 2' tile, and includes a T-bar for 2' x 4' ceilings. It also provides theft deterrence with a neutral white, perforated steel grille that matches the appearance of standard air conditioning vents and grid ceilings.