Pressure microphones

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A pressure microphone is designed to measure the sound pressure that actually exists in front of it's diaphragm. This means that the microphone also measures any changes in the sound field brought about by the presence of the microphone.

A pressure microphone is used, typically, in coupler measurements and, when flush-mounted on a wall for example, for sound-pressure measurements on the surface of the wall. In such applications, the effect of the microphone's presence in the sound field is intended.

Type
40BD
40BP
40BH
40AD
40AG
40AP
40AO
Size
¼″
¼″ ¼″
½″
½″
½″
½″
Sensitivity [mV/Pa]
1.6
1.6
0.4
50
12.5
50
12.5
Dynamic range [dB]
40-174
31-174
60-194
16-148
27-160
17-146
27-160
Frequency range [Hz]
4-70k
4-70k
10-20k
6.3-10k
3.15-20k
3.15-10k
3.15-20k
Polarisation [V]
0
200
200
0
200
200
0
Outside diameter [mm]
7
7
7
13.2
13.2
13.2
13.2
Length [mm]
10.5
10.5
10.5
16.2
12.5
16.2
12.5

Type
40EN
40DP
40AU
40EU
40DD
Size
1"
⅛"
½"
½"
⅛"
Sensitivity [mV/Pa]
50
1
12.5
50
0.7
Dynamic range [dB]
9.6-146
40-174
27-160
9.6-146
40-174
Frequency range [Hz]
2.6-8k
6.5-140k
3.15-20k
2.6-8k
6.5-80k
Polarisation [V]
200
200
200
200
0
Outside diameter [mm]
23.77
3.5
13.2
23.77
3.5
Length [mm]
19.0
6.7
12.5
19.0
6.7

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