The Nor 283 has been designed for continuous operation for more than one hour at full power. It is mainly designed to be used with the Norsonic power amplifiers Nor280 and Nor282. These amplifiers have built in limitation circuits to protect the speaker from unwanted high and low frequency components outside the frequency bands required for sound insulation testing.
The battery-operated power amplifier Nor282 has preset functions to optimize the response of the Nor282. Further enhancement of the frequency response to match the room characteristic is easy using the built-in graphical equalizer.
The low weight of less than 5.3 kg is obtained by use of specially designed loudspeaker elements with neodymium magnets. The low weight, however, does not come at the expense of robustness.
The cabinet is molded in high density polyethylene and the speakers are protected by bespoken steel grids.
The speaker comes with a high-quality tripod ensuring correct placement so that unwanted reflections and structural transmissions are kept at a minimum. Inside the 25 mm tripod tube mount on the speaker there is a 8 mm threaded screw allowing the speaker to be easily mounted upside down in the sealing of an anechoic chamber or similar.
Physical design: Dodecahedron
Sound power output:
Using the Nor282 with pink noise, and equalisation: 123 dB (Lin)
Using the Nor280 with pink noise, and equalisation: 120 dB (Lin)
Speakers: 12×4″
Power (broadband): AES Power Handling 360W / Max Power Handling 720W
Impedance: 2,7 Ohm
Diameter: 270 mm (10,63”)
Weigth: 5,3 kg (11,7 lb)
Tripod mounting rod: 3/8” – 16 Tripod screw. 25 mm diameter rod
Accessories incl.:
– Tripod
– 5 m assembled cable, if ordered with Nor282 or Nor282
– 25 mm diameter rod included with Nor283 for mounting on the tripod
