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Bruel & Kjaer 4205

Bruel and Kjaer 4205

B&K 4205 Reference Sound Power Source £ 25 a day *

Battery operated reference sound power source for use in A-weighted and octave band sound power measurements using any of the following techniques:
  • Substitution method
  • Comparison method
  • Juxta-position method
The system may also be used for absorption and reverberation time measurements.

Sound power levels
40 dB to 100 dB in 7 octave bands from 125 Hz upwards and
White or Pink Noise - 100 Hz to 10 kHz.

Manufacturer's Specifications

For much 'louder' sound sources - up to 122 dB SWL see the Nor 250 & 260/280 speaker/amplifier systems in the Building Acoustics section.

If you need a suitable sound level meter - click here for details.



* Our standard hire charges are based on a 7-day minimum period. Click here for details and other options.

Gracey & Associates   01933 624212
BSI approved for the hire of noise & vibration instruments
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