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Schoeps MK 21 Wide Cardioid Capsule Matched Pair  From Schoeps

Wide Cardioid, Matched Capsule Pair, directional pattern is between Omni and Cardioid

Schoeps Microphones


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Manufacturer's Description from Schoeps

MK 21 Capsule Features

 ♦ Wide Cardioid

 ♦ Preferred uses: as a soloist microphone or main microphone

 ♦ Extremely consistent polar response leads to a very natural sound

 ♦ Combines the advantages of the omni (warm sound) and the cardioid (directivity)

 ♦ Popular as a main microphone pair e.g. at a spacing of 30 cm, angle +/- 45°


The directivity of the wide cardioid lies between the omni and the cardioid. The idea behind their development is to combine the advantages of these two patterns. The low-frequency behaviour of the MK 21 is better than that of the cardioid, and proximity effect is less pronounced. The wide cardioid polar pattern is extremely consistent across the frequency range. Laterally-arriving direct sound and reflections are picked up without added coloration. The MK 21 is a very well-liked capsule. It is preferred when a slight directional effect and a warm, natural sound image are desired. Over the years it has become an integral part of the audio engineer's toolkit.


In Practice

When used as a spot microphone, the distance from the sound source should be slightly smaller than when using a cardioid due to lower directivity index.


The low directivity of this capsule type prevents it from generating large enough level differences for X/Y use, though MS and near-coincident spacings are often successful.


Schoeps Microphones

About Manufacturer

The focus on high quality, reliability and neutral accurate sound has been the production philosophy of Schoeps Microphones since 1948. The simple elegance and clever engineering of their products boast a true passion for the art of microphone making and a tireless attention to detail. The Colette System is the largest modular mic system available offering twenty different capsules and various active accessories. The newest addition to the acclaimed Colette System is the CMC 6 xt which offers extended frequency response beyond 40 kHz. The CCM Series mics are the smallest phantom powered non-electret microphones in the world. Other notables from Schoeps include the M222 Tube microphone, the VMS 5U portable two channel mic preamp and M/S matrix, three extremely unique stereo mics, the KFM-360 Surround microphone and the Polarflex Microphone System that allows the user to emulate the characteristics of any microphone. Schoeps is unquestionably among the most innovative microphone manufacturers in the world, leading the way in many developments. Central to its design philosophy over the years is the company's insistence on absolute sound neutrality of the microphones. It is really no wonder that Schoeps has so many supporters, not only in the area of classical music recording and reinforcement, but also in film and television. No doubt part of its success is due to the fact that, in a space of only 1500 square meters, a total of 35 employees develop, manufacture and distribute the whole range of Schoeps products. Staff turnover is very small, which says much about the family atmosphere in the company. Many an employee has celebrated his or her 25th anniversary with Schoeps. Continuity is and will remain very important at Schoeps. Despite many outside offers, Ulrich Schoeps intends to continue the life's work of his father.


Matched Pairs are delivered with a hand-signed Certificate from the factory. 

Matching is of frequency response and sensitivity within exceptionally low tolerances. 


Pickup pattern: Wide Cardioid

Frequency range:

30 Hz - 29 kHz with CMC 6 / CMR

30 Hz - 44 kHz with CMC 6xt

Sensitivity: -37 dB (V/Pa), 14 mV/Pa with CMC 6

Equivalent noise level (A-weighted): 13 dB with CMC 6

Equivalent noise level (CCIR): 23 dB with CMC 6

Signal-to-noise ratio (A-weighted): 81 dB with CMC 6

Maximum sound pressure level (THD < 0.5 %): 131 dB-SPL with CMC 6

Length: 22 mm

Diameter: 20 mm

Weight: 17 g

Surface finish: matte gray

Custom color: nickel, chromagreen