Measurement instruments

Springwell Audio is an authorised reseller for Bedrock Audio instruments. We have a range of sound level meters which cover most noise and sound measurement needs. There are two acoustic calibrators in the range as well as a professional sound source and generator.



Place an order

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The current range consists of the following items:

  • SM30 class 2 sound level meter – 1,125 Euro inc. 25% VAT
  • SM50 class 2 sound level meter with STI and STIPA – 1,625 Euro inc. 25% VAT
  • SM90 class 1 sound level meter with STI and STIPA- 2,249 Euro inc. 25% VAT
  • BAC1 Class 1 and BAC2 Class 2 calibrators – 749 or 561 Euro inc. 25% VAT
  • BTB65 Talkbox and sound generator – – 1 125 Euro inc. 25% VAT

All instruments come with a system case except calibrators. However, calibrators fit nicely in a SM50 or SM90 case. Discounts are available for combination kits comprising a BTB65 and SM50 or SM90.

Sound level meters have the following functions as standard:

  • STIPA measuring (quick screening mode, pro mode) (Not available on SM30)
  • Full STI using the direct method (65 second measurement). (Not available on SM30)
  • Speech Level Measurements cf IEC-60268 Annex J. With firmware 2.0 (Not available on SM30)
  • Sound level meter (fast, slow, Leq, A/C/Z-weighting) conforming to IEC-61672 class 1 and 2
  • Real Time Analyzer (1/3 and 1/1 octave)
  • FFT analyzer (detailed frequency analysis up to 32768 lines)
  • RT60 measuring (reverberation times: T20/T30/EDT).
  • Noise Curves (NR, NC, PNC, NCB, RC, RC mark II) With firmware 2.0
  • Calibrated audio recording
  • LAeq long-term logging and monitoring
  • Audio oscilloscope
  • Polarity of loudspeakers and electronics
  • AC Volt meter for audio line level measurements (dBU, dBV, V rms)
  • Colour touchscreen (resistive overlay)
  • Integrated rechargeable battery (can be charged with USB)
  • 20-20kHz frequency range
  • Dynamic range 24dB-124dB with the BAMT2 class 2 microphone
    24-130dB with the BAMT1 class 1 microphone
  • USB audio device mode – calibrated audio for your PC-based software applications
  • More functionality will be added through free future firmware upgrades.


BTB65 Talkbox

BTB65 Talkbox

SM50 with system case

SM50 with system case