Manufacturers' Specifications
Norsonic 280
Output : Short-circuit and over temperature protected
Output Connector : Speakon NL4MP
Output Power : 500 W RMS into 4 ohms, THD < 0.1% > 250 W RMS into 8 Ω
Output Power : >1 kW Peak
Output Current : Maximum 35 A
Input : Balanced input to avoid ground loops and cross talk to signal cables
Input Sensitivity : 1 V (0 dB)
Input Impedance : 10 kΩ // 220 pF
Input Connector : 3-pin female XLR
Operating Temperature : -20 to +35 °C
Operating Humidity : 0 to 90% RH
Enclosure Class : IP20
Power : 230 VAC ± 5%, 50 Hz
Fuse : 5A slow blow
Dimensions : 275 x 110 x 246 mm = 11 x 4.3 x 9.7 inches
Weight : 3.5 kg = 7.7 lb
The power amplifier Nor 280 is extremely powerful, so care must be taken not to destroy loudspeaker systems connected to it.
The following settings should not be exceeded.
Output Connector : Speakon NL4MP
Output Power : 500 W RMS into 4 ohms, THD < 0.1% > 250 W RMS into 8 Ω
Output Power : >1 kW Peak
Output Current : Maximum 35 A
Input : Balanced input to avoid ground loops and cross talk to signal cables
Input Sensitivity : 1 V (0 dB)
Input Impedance : 10 kΩ // 220 pF
Input Connector : 3-pin female XLR
Operating Temperature : -20 to +35 °C
Operating Humidity : 0 to 90% RH
Enclosure Class : IP20
Power : 230 VAC ± 5%, 50 Hz
Fuse : 5A slow blow
Dimensions : 275 x 110 x 246 mm = 11 x 4.3 x 9.7 inches
Weight : 3.5 kg = 7.7 lb
The power amplifier Nor 280 is extremely powerful, so care must be taken not to destroy loudspeaker systems connected to it.
The following settings should not be exceeded.
| Signal Type | Nor 213 | Nor 223 | Nor 250 |
| White/pink noise | -3 dB | -3 dB | 0 dB |
| Octave & third octave filtered pink noise, f< 200 Hz | -6 dB | -6 dB | -3 dB |
| Octave & third octave filtered pink noise, f> 200 Hz | -3 dB | -3 dB | 0 dB |
| Red/white noise with equalization On | -6 dB | -6 dB | -3 dB |
| Red/white noise with equalization Off | -3 dB | -3 dB | 0 dB |
All dB values are dB re 1 V RMS
| E&OE - specifications subject to change without notice. |
- Gracey and Associates 01933 624212
- BSI approved for the hire of noise and vibration instruments
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