Solflex SonaSafe SQV, Manual

Page: 6 / 20

Manual SQV Acoustic Housing Page 6
Version: 08/2018
3. Sound level reduction
The sound insulation performance of our acoustic enclosures was measured by
an independent laboratory, according to DIN EN ISO 3744.
Measurement method
• Sound power measurement (MP1) of the calibrated reference sound
source over a spherical envelope with 12 microphones. Acoustic data:
Class 2 according to DIN EN ISO 3744, as third octave spectrum and
octave spectrum.
• Sound power measurement (MP2) of the Solflex SonaSafe acoustic
enclosure with reference sound source inside the acoustic housing over
a spherical envelope with 12 microphones. Acoustic data: Class 2
according to DIN EN ISO 3744, as third octave spectrum and octave
spectrum.
• The difference between the two measurements is the sound
insulation performance or sound level reduction of the acoustic
housing.
MP1 - MP2 = sound level reduction by acoustic enclosure*
* The measurement tolerance of +/- 1.5 dB(A) or tolerance range of 3 dB(A)
according to DIN EN ISO 3744 was not taken in consideration and we publish
only the minimum sound level reduction values.
Measurement result
The SQV acoustic enclosure has a nominal sound level reduction of 25 dB(A).
Nominal Sound Reduction SQV Acoustic Housing :
f [Hz] 63 125 250 500 1000 2000 4000 8000 16000
De [dB(A)] 5,1 7,8 18,6 24,1 24,4 24,9 27,1 26,5 23,3
The acoustic result depends on the device to be installed and is prone to
deviations due to the particular conditions at the installation site.