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Power Amplifier for Building Acoustics

Product Code: Nor280

A portable power amplifier with internal noise generator for use with Nor-275 and Nor-276 loudspeaker units.

Remote control power amplifier specially designed for building acoustic measurements.

The noise generator features both Pink, White and Red/White noise excitation signals. The noise or line signal can be attenuated in 5 dB steps to –35dB . By adding option 1, wireless on/off you may switch on/off the signal remotely from another room. The balanced line input ensures minimum cross talk and induced noise when using long signal cables.

NEW - Modification to built in equalizer for flat spectrum for testing to ISO 140 and 16283 series of standards. Technical details here 

  • Specially designed for Building Acoustic measurements
  • Lightweight and rugged construction - only 3,5 kg!
  • Self contained noise generator
  • 500 Wrms output power
  • Emits 120 dB sound power level in the 50—5000 Hz frequency range when used with Norsonic dodecahedron loudspeakers types Nor275 or Nor276
  • Wireless remote control of noise generator (optional)
  • Equalization network to optimise acoustic output from speaker
  • Balanced signal input for low noise and limited cross talk problems
Output: Short circuit and over temperature protected
Output connector: Speakon NL4MP
Output power: 500Wrms (4ohm) and 250Wrms (8ohm)measured as THD+N<0.1%. The built-in LP and HP filters ensure that the output power matches the Norsonic Nor275 and Nor276 series of dodecahedron loudspeakers
Peak power: >1 kW
Output current: Maximum 35 A
Input: Balanced input to avoid ground loops and cross talk to signal cables
Input sensitivity: 1V (0dB)
Input impedance: 10k ohm//220pF
Input connector: 3 pin female XLR
Weight: 3,5Kg (7,7 lb)
Dimensions (D x W x H): 275 x 110 x 246 (mm) 11 x 4,3 x 9,7 (inch)
Operating temperature: -20 to + 35 °C
Operating humidity: 0-90 %RH
Enclosure class: IP20
Mains voltage: 220Vac (190 - 265Vac, 45-55Hz) or 110Vac (90 - 132Vac, 55-65Hz)
Mains fuse: T 3,15A for 220Vac and T 6A for 110Vac
EMC and safety standards: EN55103-1, EN55103-2, IEC61340-5 part 1&2, IEC61010, FCC part 15b class A
Schedule of parts: Mains input lead, BNC to XLR female adapter, Output connector or a complete assembled cable 5m if ordered with a Norsonic Nor275 or Nor276 speaker. User manual with conformance certification.
Ordering information: Option 1: Wireless remote on/off switch (must be specified when ordering)

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