Norsonic noise sources are designed to provide a reliable and consistent tools for professionals.
 

The range includes:
 

• Nor258 MLS Synchroniser - external synchronisation box for use with Nor840 when using the external MLS noise generator Nor257.
   
• Nor261 Ref. sound source - reference sound source for Sound Power determination according to ISO. 230V/50Hz or 115V/60Hz.
   
• Nor275 Loudspeaker - a powerful sound source designed for building acoustics measurements per ISO-140/4 Annex A (Field measurements). The source provides uniform sound radiation. When used with the power amplifier Nor280, the high sound power level ensures accurate descriptors in measurement conditions that include high background levels, high sound insulation properties and large room volumes.
   
• Nor276 Loudspeaker - the Nor276 is a high power loudspeaker with omnidirectional characteristics. It fulfils the following standards; ISO 140-3 Annex C (Laboratory measurements), ISO 140-4 Annex A (Field measurements) and the ISO3382 Annex A (Reverberation Time measurements).
   
• Nor277 Tapping Machine - for making footfall noise transmission measurements in buildings as set out in International and National Standards.
   
• Nor280 Power Amplifier - This power amplifier is the 4th generation of specially designed units for building acoustic measurements from Norsonic. It is less than half the size and weight, but twice as powerful as its predecessors.
   

Other Norsonic products:

• Nor848 - high performance Acoustic Camera 
• Sound Level Meters
• Accessories
• Microphones/Pre-amplifiers
• Software
• Calibrators
• Vibration
• Environmental Monitoring
• Building Acoustics
• Calibration Systems
• Hearing Protection System
• Airflow Resistance Measurement System