Norsonic Nor275 Hemi-Dodecahedron Loudspeaker – ISO 16283-1 Certified Acoustic Measurement
NOR275
The Norsonic Nor275 hemi-dodecahedron loudspeaker is a professional-grade sound source specifically engineered for building acoustics measurements in situ, fully compliant with the international standard ISO 16283-1. Designed to stand directly on the floor, the Nor275 utilizes the floor as a reflect...
In-Depth Overview
The Norsonic Nor275 hemi-dodecahedron loudspeaker is a professional-grade sound source specifically engineered for building acoustics measurements in situ, fully compliant with the international standard ISO 16283-1. Designed to stand directly on the floor, the Nor275 utilizes the floor as a reflective surface, delivering uniform, omnidirectional sound radiation from its compact six-driver array, ensuring accurate and reliable measurement of sound insulation properties.
Powered exclusively by the Nor280 power amplifier, the Nor275 loudspeaker produces a powerful sound pressure level up to 120 dB (Lin) accompanied by pink noise with precise equalization. This high output capability enables effective acoustic testing even in challenging environments with high background noise, thick partitions with superior sound insulation, or large-volume rooms. The robust design allows for continuous operation at full power for over one hour without degradation.
Key technical features include hemispherical sound radiation, six-driver configuration for omni-directional output, compatibility solely with the Nor280 amplifier to guarantee optimal performance and warranty protection, and compliance with ISO 16283-1 which governs field measurement of sound insulation in buildings.
The Nor275 is ideal for acoustic consultants, building engineers, researchers, and quality control professionals engaged in applications such as building acoustics assessments, noise and vibration testing, environmental noise monitoring, automotive and aerospace NVH (Noise, Vibration, and Harshness) analysis, and manufacturing quality assurance. The device’s reliability and accuracy make it a top choice for complex acoustic environments requiring detailed frequency and sound level analysis.
Norsonic has recently resumed production of the Nor275 due to growing industry demand, making it readily available for projects requiring industry-standard compliant sound sources.
For professionals seeking a high-performance acoustic measurement solution, the Norsonic Nor275 is engineered for precision, durability, and consistency. Request a detailed quotation today to enhance your acoustic testing capabilities with this advanced hemi-dodecahedron loudspeaker.
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Technical Specifications
Technical specifications and parameters
| Parameter | Specification |
|---|---|
| Type | Hemi-dodecahedron loudspeaker (floor-standing sound source) |
| Weight | 6 kg (13.2 lb) |
| Drivers | 6 x 6 in |
| Amplifier | Nor280 only |
| Impedance | 5.3 Ω |
| Standards | ISO 16283-1 Annex A, ISO 354, ASTM E90, ASTM E336 |
| Sound power | 120 dB (lin) with Nor280 (pink noise, equalised) |
| Power (broadband) | 100 W RMS max., 500 W peak |
| Continuous operation | More than 1 hour at full power |
For detailed specifications and compliance information, please visit the manufacturer's product page or download the resources in the Resources tab.
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