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Schoeps話筒麥克風 CCM 4 話筒 Schoeps麥克風 CCM4
CCM 4 緊密型話筒
經典的心形話筒，在整個頻率范圍內具有一致的方向性
應用的范圍最廣，即適用于點話筒也適用于使
用ORTF或M/S話筒擺放的立體聲錄音
通常用于演唱、演講以及大部分樂器
所有CCM話筒類型的技術指標：
供電： 12V ± 1V 或 48V ± 4V 幻像供電
電流損耗（自動切換）： P12：8mA，P48：4mA
源阻抗： 90 Ω
推薦最小負載阻抗： 600 Ω
低切頻率（－dB）： 20Hz
其它所有指標見14頁或以下Colette拾音頭的相應指標。
U版本長度： 46mm－58mm，根據型號決定
L版本長度： 46mm－58mm不帶連接器
直徑： 20mm
不包括線纜的重量： U版本：g，L版本：4g
表面拋光： 磨砂灰（g）或鎳（ni）
線纜（K 5 LU）標準長度： 5m
如果需要其它長度可單獨定制，但便攜盒所能容納的線纜最大長度為10m。
CCM 4 COMPACT MICROPHONE
PROPERTIES
classic cardioid
suitable for the widest range of applications, either as a spot microphone or for stereo recording with coincident, ORTF or M/S microphone arrangements
consistent directionality throughout its frequency range
often preferred for singing or speaking voices and most instruments
DESCRIPTION
The CCM 4 is our best-selling compact microphone. It offers the highest sound quality, flat frequency response, optimal rejection of rear-incident sound, and a directional pattern that remains constant throughout the audio frequency range. In the diffuse sound field it shows only a mild rise around 10 kHz. The sonic impression is thus free of coloration whether sound is arriving at the front or at the sides of the microphone, as well as for diffuse sound (reverberation) in a room.
By design, the CCM 4 was optimised for rejection of rear-incident sound. As is typical of a classic cardioid, the attenuation at 90° incidence angle is 6 dB and at 180° it reaches 20-30 dB. Diffuse sound is reduced by 4.8 dB compared to frontally-incident sound - a value corresponding to the directivity index. The higher this value is, the less room sound the microphone picks up, thus lowering the risk of acoustic feedback.
Thanks to its directivity, the CCM 4 can achieve the same diffuse-to-direct sound balance from 1.7 times the distance to the sound source compared to a pure pressure transducer with the same sensitivity.
PRACTICE
The CCM 4 is suitable for recording both speech and music. It is used equally often as a spot or studio microphone or as part of a stereo array. For example, the ORTF-Stereo technique with STC is realised using this microphone. Excellent results can be achieved with a CCM 4 as the mid microphone in a M/S arrangement or with two CCM 4 as a XY stereo pair.
This microphone type is exceptionally universal and thus most often used.
