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Nor275

Nor275-1

Nor275-280

Noise sources

Nor275

Hemi-dodecahedron loudspeaker

The Nor275 is a sound source designed for in situ building acoustics measurements in accordance with ISO 16283-1:2014.

It provides uniform sound radiation and, when used with the Nor280 power amplifier, delivers a high sound power level to support accurate determination of acoustic descriptors, including in conditions with high background noise levels, high sound insulation or large room volumes.

Designed for placement on the floor, the Nor275 uses the floor as a reflecting surface for the emitted sound. The loudspeaker is designed to operate continuously at full power for more than one hour.

The Nor275 must only be used with the Nor280 power amplifier. Using other amplifiers may damage the loudspeaker and will invalidate the warranty.

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Features

Standards

Specifications

Features

Fulfill ISO 16283-1 Annex A standard forairborne insulation measurements in field.
Powerful - 120 dB Lw.
Lightweight, portable and rugged design for field use.

Standards

ISO 16283-12
ISO 354
ASTM E-90, E-336

Specifications

Physical design: Hemi-Dodecahedron

Sound power output:

Using the Nor280 with pink noise, and equalisation: 120 dB (Lin)

Speakers: 6x6″

Power (broadband): 100 WRMS (max) Peak 500 W

Impedance: 5.3 Ohm

Diameter: 195 mm (113”)
Weigth: 6 kg (13.2 lb)

Accessories incl.:

Speakon NL4FC plug replaced by a 5 m assembled cable, if ordered with Nor282 or Nor282

Environmental noise

Environmental noise

Reliable noise monitoring with sound level meter, stand-alone terminals or large-scale systems.

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Building acoustic

Building acoustic is about the sound that travels between rooms - something you'd rather avoid.

Room-acoustics

Room Acoustics

Room acoustics is about the sound quality in a room, for example in a concert hall.

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Sound Intensity

Measure sound level and direction, even in challenging acoustic environments.

Sound-Power

Sound Power

Sound Power is about how much sound energy a source emits per unit of time, measures in watts.

Noise at Work

Noise at Work

Noise measurement at the workplace for easy mapping and documentation of noise levels

Nor282 Power Amplifier

Noise sources

Nor282 Power Amplifier

Nor280 Power amplifier

Noise sources

Nor280 Power amplifier

Nor145 sound level meter

Sound level meters

Nor145 Sound level meter

Nor850-BA-ISO163283

Software

Nor850-BA software

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