 
                                
                            Ceiling Speakers
| PC-245AB-EB | PC-275AB-EB | |
|---|---|---|
| Frequency response | 150 Hz - 20 kHz | 180 Hz - 20 kHz | 
| Sensitivity (1 W, 1 m) | 91 dB | 92 dB | 
| Max. SPL (1 m) | 102 dB | 100 dB | 
| Rated input (100 V) | 6 W x 2 | 6 W x 2 | 
| Tappings (100 V) | 100 V: 2 x 1.67 kΩ (6 W) / 3.33 kΩ (3 W) / 6.67 kΩ (1.5 W) | 100 V: 2 x 1.67 kΩ (6 W) / 3.33 kΩ (3 W) / 6.67 kΩ (1.5 W) | 
| Speaker component | 2 x 12 cm cone-type | 2 x 12 cm cone-type | 
| Operating temperature | -10 °C to +55 °C | -10 °C to +55 °C | 
| Finish | Steel, traffic white (RAL 9016 or equivalent) | Steel, traffic white (RAL 9016 or equivalent) | 
| Dimensions | 245 x 131 mm (Ø x D) | 274.4 x 86.5 mm (Ø x D) | 
| Weight | 2.05 kg | 1.49 kg | 
| Dust / Water protection. | IP 32 | IP 32 |