G.R.A.S. Sound & Vibration - Microphones

1" externally polarised microphones

½" externally polarised microphones

¼" externally polarised microphones

Type 40BF - ¼" free-field

Freq range: 4 Hz to 100 kHz

Dyn range: 30 dB(A) to 172 dB

Sensitivity: 4 mV/Pa

Polarising Voltage: 200 V

Use: IEC 61094 WS3F

⅛" externally polarised microphones

Type 40DP - ⅛" pressure

Freq range: 6.5 Hz to 140 kHz

Dyn range: 40 dB(A) to 178 dB

Sensitivity: 1 mV/Pa

Polarising Voltage: 200 V

Use: high level, impulse

½" pre-polarised microphones

¼" pre-polarised microphones

⅛" pre-polarised microphones

Freq range: 6.5 Hz to 70 kHz

Dyn range: 40 dB(A) to 175 dB

Sensitivity: 0.7 mV/Pa

Polarising Voltage: 14.5 V

Use: high level, impulse

* IMPORTANT NOTE:

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    Many G.R.A.S. pressure microphone capsules have front vented variants available

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