G.R.A.S. 67SB Blast Probe Microphone according to ANSI S12.42

Freq range: 10 Hz to 20 kHz
Dyn range: 44 dB(A) to 174 dB
  • 67SB Blast Probe Mic
  • 67SB Blast Probe Mic
  • 67SB Blast Probe Mic

The 67SB is equipped with a 1/8" reference microphone which is designed to capture impulsive noise with a very short duration. The 67SB is provided with a 1/4" threaded hole for monting the 67SB directly on a tripod e.g. AL0006.

The 67SB has a length of 410 mm.

Frequency range (±2 dB) Hz 10 to 20 k
Dynamic range lower limit (microphone thermal noise) dB(A) 44
Dynamic range upper limit dB 174
Microphone venting Rear
Output impedance Ω 75
Temperature range, operation °C / °F -30 to 70 / -22 to 158
Temperature range, storage °C / °F -40 to 85 / -40 to 185
Static pressure coefficient @250 Hz dB/kPa -0.01 at 25 °C
Humidity range non condensing % RH 0 to 95
Humidity coefficient @250 Hz dB/% RH <0.1/0-100
Influence of axial vibration @1 m/s² dB re 20 µPa 59
Connector type 3 m 7-pin LEMO
CE/RoHS compliant/WEEE registered Yes/Yes/Yes
Weight g / oz 650 /22.9


G.R.A.S. RA0246 Calibration clip for use with Pistonphone
G.R.A.S. GR1243 Pistonphone adapter
G.R.A.S. YY0012 1.5 mm Hex key
G.R.A.S. LI0056 Manual


G.R.A.S. 12AK 1-ch LEMO Power Module with gain, filters and SysCheck generator
G.R.A.S. AA0008 3 m LEMO extension cable
G.R.A.S. AA0009 10 m LEMO extension cable
G.R.A.S. 42AP Intelligent Pistonphone
G.R.A.S. AL0006 Tripod