Nor283 Dodecahedron Loudspeaker

The Nor283 Dodecahedron Loudspeaker is a professional omnidirectional sound source engineered for building acoustics, room acoustics, and sound insulation measurements in accordance with ISO 10140, ISO 16283, and ISO 3382. Its twelve-sided geometric design houses multiple loudspeaker drivers that radiate sound uniformly in all directions, satisfying the strict directivity requirements specified in international measurement standards for airborne sound insulation and reverberation time testing. When paired with a Norsonic power amplifier such as the Nor280 or Nor282, the Nor283 produces sound power levels up to 123 dB (Lin) when driven by the Nor282 amplifier (120 dB with the Nor280) across the 100 Hz to 5 kHz frequency range. This output is sufficient to achieve the required signal-to-noise ratio for accurate sound insulation measurements even in well-insulated partitions commonly found in modern residential and commercial construction. The 2.7-ohm impedance is matched to Norsonic power amplifiers such as the Nor280 and Nor282. The Nor283 is tripod-mountable for precise positioning at the source room measurement heights specified by ISO 16283 and ISO 3382. Its durable construction withstands the rigors of daily field use on active construction sites, while the light 5.3 kg weight is easy to transport between measurement positions. For building acoustics consultants working on the rapidly growing number of residential towers, hotels, and mixed-use developments across Saudi Arabia, the UAE, Qatar, and the wider GCC, the Nor283 provides the reliable omnidirectional excitation needed for compliant airborne sound insulation testing, reverberation time measurement, and sound power determination.