Comparison Table for Primo Microphone Capsules

MODEL

Directionality

(Polar

Pattern)

SENSITIVITY

0dB=1V/PA

Self Noise

Signal to

Noise

Ratio

MAXIMUM

SPL

Connection

DIA.

(mm)

HT.

(mm)

EM172

Omni

-28 dB

14 dB

80 dB

119 dB

2-wire

10.0

4.5

EM173

Omni

-37 dB

14 dB

80 dB

135 dB

3-wire

10.0

4.5

EM258

Omni

-32 dB

20 dB

74 dB

115 dB

2-wire

5.8

2.0

EM23

Omni

-40 dB

>70 dB

21.0

13.5

EM182

Cardioid

-41 dB
16 dB 78 dB 136 dB 3-wire

10.0

4.5

EM184

Cardioid

-39 dB

22 dB

78 dB

122 dB

2-wire

10.0

4.5

EM264

Cardioid

-37 dB

20 dB

74 dB

120 dB

2-wire

10.0

4.5

EM200

Cardioid

-41 dB

16 dB

78 dB

136 dB

3-wire

14.6

4.5

EM204N

Cardioid

-31 dB

22 dB

78 dB

127 dB

3-wire

14.6

4.5

EM283

Figure Of Eight

-39 dB

22 dB

72 dB

122 dB

2-wire

10.0

4.5

Panasonic

WM61A**

Omni

-35 dB

32 dB

62 dB

- 2-wire

6.0

3.4

** Please not that we no longer stock the Panasonic WM61A and it is no longer manufactured. We feature the specification here purely for reference.
The Primo EM258 is a better specified and slimmer replacement for the Panasonic WM61A.