Schoeps MK 21
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Manufacturer Information
Schoeps
https://www.schoeps.de
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Schoeps GmbH
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A "wide cardioid" reference that has become a recording classic
The MK 21 was designed to combine the strengths of two worlds: the openness and sense of space of an omnidirectional capsule, and the ability of a directional model to better highlight the source. Over the years, it has established itself as a recurring choice in the toolkit of many sound engineers, especially when subtle directivity and natural timbre are priorities.
For which recordings is the MK 21 most relevant?
This microphone capsule is intended for uses where one wants to maintain a beautiful openness while slightly limiting the room ambiance. It is very suitable for acoustic instruments, ensembles, overheads that need to remain soft, or situations where the room contributes to the sound without overpowering it. Thanks to a less pronounced proximity effect than a cardioid, it also facilitates close placements without excessive bass, speeding up mixing work.
A capsule designed for coherence and precision, even in the ultra-high frequencies
Wide cardioid: stable image and cleaner side reflections
The wide polar pattern of the MK 21 remains homogeneous across the entire frequency range, which helps preserve timbre when the source moves slightly or when the acoustics send reflections from the sides. Result: fewer surprises in the high spectrum and a realism often appreciated in demanding recordings.
Extended frequency response with compatible electronics
Depending on the microphone amplifier used, the frequency response varies: with CMC 6 or CMR, the capsule already reaches very high frequencies, and with CMC 6xt the bandwidth extends up to 44 kHz. A real advantage for high-resolution capture, transients, and fine harmonics, while maintaining the warm and natural signature that makes it renowned.
Technical specifications
| Frequency response | 30 Hz - 20 kHz |
| Category | studio microphone |
| Directivity | cardioid |
| Connection | XLR |
| Color | Grey |
| Sensitivity | -37 dB (V/Pa), 14 mV/Pa |
| Equivalent noise (A-weighted) | 13 dB |
| Equivalent noise (CCIR) | 23 dB |
| Signal-to-noise ratio | 81 dB |
| Max SPL (THD below 0.5%) | 131 dB SPL |
| Length | 22 mm |
| Diameter | 20 mm |
| Weight | 17 g |
Questions frequently asked
Is the Schoeps MK 21 suitable for acoustic instruments?
Its wide cardioid pattern maintains openness while slightly reducing ambient sound. The proximity effect, less pronounced than with a standard cardioid, allows close placements without excessive bass.
What is the polar pattern of this Schoeps capsule?
The wide cardioid pattern offers a coverage close to omnidirectional while emphasizing the source more. Its response remains consistent across the frequency range, even when the source moves slightly.
Can it be used as overheads?
This capsule is suitable for overheads aiming for a smooth reproduction and a stable image. Side reflections retain a coherent timbre thanks to the wide polar pattern.
Which electronics are compatible with the MK 21?
The stated frequency response is 30 Hz to 20 kHz. With CMC 6 or CMR preamps, the capsule already reaches very high frequencies; using a CMC 6xt extends the bandwidth up to 44 kHz.
What is the maximum sound pressure level the capsule can handle?
The maximum SPL reaches 131 dB-SPL with harmonic distortion below 0.5%. The A-weighted equivalent noise level is 13 dB, and the sensitivity is 14 mV/Pa.
