SF 228T – Plus 8″ Two-Way SoundField Ceiling Tile Speaker
Key Features
- 2′ x 2′ (610 mm x 610 mm), 18.9 lbs (8.6 kg) drop-in ceiling tile speaker designed for US-style suspended ceilings
- UL 2043 plenum rated enclosure
- High performance coaxial driver with 8″ (203 mm) long-throw woofer and 1.1″ (28 mm) silk dome tweeter
- Tuned bass reflex port for extended low frequency response
- Rigid front baffle reduces unwanted enclosure resonances
- Extron-exclusive enclosure weighs less than
- 20 pounds (9 kg)
| Audio/acoustic and electrical | |
|---|---|
| Speaker type | 2-way, full-range, in-ceiling speaker |
| Frequency range | 47 Hz to 22 kHz, -10 dB, half space (per IEC 60268-5) |
| Frequency response | 63 Hz to 12.5 kHz, +/-3 dB, half space |
| Power capacity | 90 W (rms) continuous pink noise (per IEC 60268-5) 180 W (rms) continuous program |
| Rated maximum input voltage (MIV) | 19.95 V (49.8 W at 8 ohms, per AES2-2012) |
| Maximum SPL | 104.9 dB, 1 m (based on MIV) 105.8 dB,1 m (linear) |
| Nominal sensitivity | 89 dB SPL, 1 W, 1 m, half space (per IEC 60268-5, 60 Hz to 20 kHz) |
| Nominal coverage angle | 95° conical coverage (1 kHz to 4 kHz) |
| Nominal impedance | 8 ohms per speaker |
| Crossover frequency | 2.5 kHz |
| Drivers | |
| Woofer | (1) 8″ (203 mm) polypropylene cone |
| Tweeter | (1) 1.1″ (28 mm) silk dome |
| Input connectors | (2) splicing connectors, 3-pole, for 1 input and 1 loop-through |
| Tap settings | |
| 70 V input | 64 W, 32 W, 16 W, 8 W, off, 8 ohms direct |
| 100 V input | Null, 64 W, 32 W, 16 W, off, 8 ohms direct |
| Overload protection | Full range power limiter protecting the tweeter, woofer and crossover |
| General | |
| Package | 2 speakers (1 pair) |
| Included accessories | Setup guide, (4) 3-pole splicing connectors, (2) 2-foot (610 mm) cross bars |
| Ambient 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 |
| Enclosure type | Composite, square, with metal grille |
| Enclosure outer dimensions | 5.41″ H x 23.75″ W x 23.75″ L (137 mm H x 603 mm W x 603 mm L) |
| Product weight | 18.9 lbs (8.6 kg) each |
| Regulatory compliance | |
| Safety | CE, UL 2043, CAN/ULC-S142:16, UL 1480A, NFPA 90A, NFPA 70 UL Listed for use in plenum airspaces: UL 2043 and CAN/ULC-S142:16 listed for heat and smoke release, UL 1480A listed for commercial and professional audio systems |
| Environmental | RoHS, WEEE |
| Product warranty | 5 years parts and labor |
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.
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
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.
Features
- 2' x 2' (610 mm x 610 mm), 18.9 lbs (8.6 kg) drop-in ceiling tile speaker designed for US-style suspended ceilings
- UL 2043 plenum rated enclosure
- High performance coaxial driver with 8" (203 mm) long-throw woofer and 1.1" (28 mm) silk dome tweeter
- Tuned bass reflex port for extended low frequency response
- Rigid front baffle reduces unwanted enclosure resonances
- Extron-exclusive enclosure weighs less than
20 pounds (9 kg) - White perforated grille matches appearance of HVAC vents
- 8 ohm direct or 70/100 volt operation with switch selectable power taps
- Frequency range: 47 Hz to 22 kHz
- 90 watts continuous pink noise
180 watts continuous program - 5.41" (137 mm) deep low profile enclosure for plenum environments
- UL 1480 listed for safety
- 5 year parts and labor warranty
- Designed and manufactured by Extron
- TAA Compliant version available — Please inform your local Extron representative if your order requires compliance with TAA regulations.