A powerful sound source designed for building acoustics measurements per ISO 16283-1:2014 (replaces ISO-140/4 Annex A (Field measurements)).
The source provides uniform sound radiation. When used with the power amplifier Nor282 (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.
Nor275 is designed for placement on the floor and uses the floor as a mirror for emitted sound.
The loudspeaker is designed to operate at full power for more than one hour continuously.
The Nor275 is designed to be used with the Nor282 power amplifier (Nor280 power amplifier) only. Using other amplifiers may damage the speaker and will void the warranty.
Physical design: Hemi-dodecahedron
Sound power output: Using the Nor282/Nor280 with pink noise, and equalisation: 120 dB (Lin)
Speakers: 6×6”
Power (broadband): 100 WRMS (max), Peak 500 W
Impedance: 5.3 Ω
Diameter: 355 mm (14”)
Height: 195 mm (7.6”)
Weight: 6 kg (13.2 lb)
Cable (/xm) for connecting Nor275 Hemi-dodecahedron or Nor276 Dodecahedron Loudspeaker to Power Amplifier Nor280.
Nor1494/x consist of 4 pc 1,5mm² conductors. Maximum recommended length is 25 meters.
Rugged flight case Nor1327C with wheels and handle for the Hemi-dodecahedron Loudspeaker Nor275, tripod, Power Amplifier Nor280/Nor282 and miscellaneous accessories.
Dimensions: Length: 58 cm, Width; 58 cm, Height: 45 cm.
Photos just for illustration – the flight case can differ a little in newer version.
Please see the Norsonic Nor275 product page for the most recent downloads and software updates.