Specifications
120
Attenuation of the A-weighted wind-noise level
compared to the unprotected transducer at a
* The corresponding values for the cardioid (CMC 64 or
CCM 4) are consistently 2 to 5 dB better; for the wide car-
dioid (CMC 621 or CCM 21) the difference is 5 to 7 dB.
For a given strength of wind, the noise level produced
in a pressure transducer will always be distinctly less
than that produced in a pressure gradient transducer.
Thus when wind might be a problem, we recommend
using an omnidirectional microphone where possible,
rather than (for example) a cardioid. In addition, a
low-cut filter (CUT 1 or LC 60) should be used to sup-
press the wind noise even further. An omnidirectional
microphone with this type of low-frequency cut can
still have better low-frequency response than a cardioid;
any cardioid has an inherent low-frequency response
rolloff, and that rolloff is only accentuated by the use
of a windscreen.
CMC 641 / CCM 41 * CMC 68 / CCM 8
Attenuation Attenuation
WB – 21 dB-A
WMS 32 dB-A 27 / 36 dB-A
(side / end face)
WKFM: 12 / 22 dB-A attenuation of 12 / 22 dB-A on the cap-
sule’s axis / stereo main axis
Compatibility chart
... with pressure transducer (CMC 62 / CCM 2)
Type of windscreen Attenuation Wind noise
- 0 dB-A 110 dB-A
B 20 25 dB-A 85 dB-A
B 20 S 27 dB-A 83 dB-A
B 5 28 dB-A 82 dB-A
W 20 29 dB-A 81 dB-A
B 5 D 35 dB-A 75 dB-A
WSR MS 37 dB-A 73 dB-A
W 5 38 dB-A 72 dB-A
W 5 D 40 dB-A 70 dB-A
BBG 41 dB-A 69 dB-A
WSR 100 LU 41 dB-A 69 dB-A
W 20 R1 43 dB-A 67 dB-A
WSR MS with Windjammer 47 dB-A 63 dB-A
BBG with Windjammer 53 dB-A 57 dB-A
WSR 100 LU with Windjammer 53 dB-A 57 dB-A
... with pressure gradient transducer (CMC 641 / CCM 41*)
Type of windscreen Attenuation Wind noise
- 0 dB-A 130 dB-A
B 5 20 dB-A 110 dB-A
B 20 26 dB-A 104 dB-A
W 5 28 dB-A 102 dB-A
B 5 D 32 dB-A 98 dB-A
B 20 S 34 dB-A 96 dB-A
W 20 38 dB-A 92 dB-A
BBG 44 dB-A 86 dB-A
WSR 100 LU 44 dB-A 86 dB-A
W 5 D 46 dB-A 84 dB-A
W 20 R1 51 dB-A 79 dB-A
WSR MS 52 dB-A 78 dB-A
BBG with Windjammer 57 dB-A 73 dB-A
WSR 100 LU with Windjammer 57 dB-A 73 dB-A
WSR MS with Windjammer 62 dB-A 68 dB-A
wind speed of 18 km/h (ca. 11 mph) ...
These results are A-weighted according to IEC 61672-1.
Wind noise attenuation with CMIT 5 U shotgun
microphone, all filters in ”off” position:
CMC, CMD
+ capsule
CCM _L CCM _U capsule
on KC
RC RCY MSTC CMXY
notes
B 1
+
–
+
Primary function: protection
against dust deposits
++
Cannot be used with MK 6
or 8 or corresponding CCM
compact microphones. With
MK / CCM 4V, 4VXS, 41V: see
page 125
+++
Cannot be used with
MK 4V, 4VXS, 41V, 6 or 8 or
correspond ing CCM compact
micro phones.
recommended
– not recommended
B 5
W 5
B 20
+++
B 20 S
+++
W 20
W 20 R1
– –
BBG
– – –
WSR (MS) 100 LU
WSR MS
WSR CMXY
B 1 D
B 5 D
++
W 5 D
+++
– –
WMS
WB
Windscreens and Popscreens
W 140 18 dB-A
Softie 30 dB-A
Windscreen type: (without / with Windjammer)
mono and MS-Stereo-Set, Ø 100 mm 30 dB-A / 41 dB-A
Surround-Set, Ø 150 mm 47 dB-A / 51 dB-A