Schoeps CCM 4

Description

The Schoeps CCM 4 is Schoeps’ 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 the 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 optimized for the 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.

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

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 realized using this microphone. Excellent results can be achieved with a CCM 4 as the mid microphone in an M/S arrangement or with two CCM 4 as an XY stereo pair.

This microphone type is exceptionally universal and thus most often used.

TECHNICAL SPECIFICATIONS

Frequency range	see the corresponding capsule
Sensitivity	see the corresponding capsule
Maximum sound pressure level (THD < 0.5 %)	136 dB-SPL (P48) 128 dB-SPL (P12)
Maximum output voltage	2,6 V (8,3 dbV) with 2 kΩ load
Low cut filter	20 Hz, 12 dB/Okt
Output impedance	90 Ω @ 1 kHz
Maximum cable length	> 400m
SCHOEPS RFI Shield	No
Powering standard / Valid range	P48 / >40 V P12 / >10 V
Current consumption	4 mA (P48) 3,6 mA (P12)
Common mode rejection ratio (at 1 kHz)	> 55 dB
Minimum recommended load impedance	2 kΩ
Output	Lemo (CCM-L) or XLR-3M (CCM-U), analog, 1 channel
Length	46 mm
Diameter	20 mm
Weight	45 g
Surface finish	matt-grau (g) or custom color