| SF 228T Plus |
|
| 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 |
| NOTE | All nominal levels are at ±10%. |
|
| NOTE | Specifications are subject to change without notice. |
|
|
 |
 |
| (5448-D3) |