TYPE 3654

Sound Intensity Probe Kit For Type 2270

Type 3654 is a two-microphone probe kit for measuring sound intensity and is designed for use with our hand-held Sound Intensity System Type 2270 for measuring sound intensity.

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Type 3654 Sound Intensity Probe Kit includes the ½” Sound Intensity Microphone Pair Type 4197 for 1/3-octave centre frequency measurements between 20 Hz and 6.3 kHz. Extending the upper 1/3-octave centre frequency to 10 kHz can be achieved using pressure correction.


  • Sound intensity measurements using two-microphone technique in accordance with IEC 1043 Class 1
  • Sound power measurements in accordance with ISO 9614-1, ISO 9614-2, ECMA 160 and ANSI S 12-12

Used with ½” Microphone pair Type 4197, the probe complies with IEC 1043 Class 1. These ½” microphones feature patented phase-corrector units making precision low-frequency phase matching practical, leading to increased measurement range and accuracy.