The "Open Cardioid" pickup pattern was introduced by SCHOEPS in 2008. It lies between the classic cardioid and the wide cardioid, achieving both a fair amount of directivity and very natural sound quality. Many years' experience of professional recording engineers with the range of Schoeps cardioids has played a large role in the development process. Meanwhile the MK 22 has become a preferred soloist and spot microphone, thus becoming an alternative to the "classic" MK 4.
SchoepsCCM 22 Microphone
This type of microphone has a directional pattern between omni and cardioid. The basic idea in designing the CCM 21 was to combine the advantages of the cardioid with those of the omni. This results in a pickup pattern which blends the two sets of characteristics in a useful manner. It has fuller and more extended low frequency response than a cardioid, with less proximity effect, while attenuating side- and rear-incident sound less than a cardioid.
The polar diagram shows the directivity of the CCM 21 to be only slightly dependent on frequency. This contrasts with omnidirectional capsules, whose directivity increases with rising frequency, and with cardioids (at least smaller ones), which tend to accentuate high frequencies that arrive at oblique angles. The CCM 21’s orientation is less critical than with a cardioid, since direct sound arriving on axis and reverberant or other sounds off axis are both reproduced accurately. This lack of coloration in the off-axis pickup produces a “warm” and natural sonic impression.
The years of experience which many recording engineers have had with the various types of SCHOEPS cardioid microphones have played a large role in the design process. The CCM 4 cardioid is often relied upon as a reference microphone, even in difficult recording situations; its sonic transparency and outstanding suppression of rear-incident sound make it a universal problem-solver. The CCM 21 wide cardioid offers an alternative when its lower directivity fits the recording situation, e.g. for the first desk of strings or for solo piano. This microphone type is prized for its sonic character (similar to that of a pure omnidirectional microphone) and its relative lack of proximity effect. Then the wish arose for a “middle way” which would combine these characteristics into a single capsule. The result is the CCM 22 Open Cardioid.
|Frequency range||see corresponding capsule|
|Sensitivity||see corresponding capsule|
|Maximum sound pressure level (THD < 0.5 %)||135 dB-SPL (P48)|
|127 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||> 400 m|
|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 (CCM-L)|
|Weight||45 g (CCM-L)|
|Surface finish||matte gray (g) or custom color|