Specifications

14
Pressure Transducers
Microphone Capsule MK 2
– omnidirectional pattern
– very flat frequency response
– for use close to the sound source (frontal sound
incidence)
– often preferred for relatively close miking of instru-
ments, vocalists, etc.
As can be seen from the frequency response curve, this
capsule type has flat frequency response for frontal
sound incidence. This yields a very natural quality when
picking up sound that is predominantly direct, i.e. close
to the source or in a ”dry” acoustic. The sonic impres-
sion never becomes overly brilliant or ”sharp.”
Please note that there is some directivity at high fre-
quencies due to the physics of sound wavelengths.
Thus even with an omnidirectional microphone, it still
matters which way the capsule is “aimed.”
The MK 2 is often used for acoustical measurement,
an application for which it has gained a considerable
reputation. A mechanical adapter (type AMBK 1, from
20 mm to 1" diameter) is available for calibration with
B&K devices. Please note that because of dimensional
tolerances, only the nickel-finish version of the MK 2
can be used with this adapter.
Length: 22 mm
Diameter: 20 mm
Weight: 17 g
Frequency range: 20 Hz – 20 kHz
Sensitivity: 16 mV/Pa
Equivalent noise level:
A-weighted*: 11dB-A
CCIR**: 23 dB
Signal-to-noise ratio
(A-weighted*): 83 dB-A
Maximum SPL: 130 dB (0.5% THD)
Frequency response curve MK 2 + CMC 6
Polar diagram
from outer
to inner:
up to 1 kHz 4 kHz
2 kHz 8 kHz
16 kHz
20 50 100 200 500 1k 2k 5k 10k 20kHz
+10
0dB
-10
-20
*IEC 61672-1, **IEC 60268-1
A frequency response graph for this capsule with the
CMC 6 xt or CMD 2 xt amplifiers is shown on page 135.
COLETTE
modular
omni