



SCHOEPS MK 21
PRICE ON ENQUIRY
SCHOEPS MK 21 wide cardioid capsule for the Colette modular system: warm omni-like sound with cardioid directivity, very consistent polar pattern. Available in India from Shivansh Electronics, Kolkata, West Bengal, India.
VISUAL GUIDE — See Every Photo, Spec & Setup Step (PDF)
PRICE ON ENQUIRY. For the price, exclusive offers, delivery timelines, or any other information, please Contact / WhatsApp +91 89818 07755 / +91 91477 00677. We will gladly share a personalised quotation for Shivansh Electronics, Kolkata, West Bengal, India. All payments are processed securely through Razorpay, our trusted payment gateway partner.
Acoustics
| 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 |
Physical
| Length | 22 mm |
| Diameter | 20 mm |
| Weight | 17 g |
| Surface finish | Matte grey; custom colours Chromagreen, Smoked Silver |
System
| Series | Colette modular system |
| Matching amplifiers | CMC 1 U, CMC 1 L, CMC 6 |
| Options | Matched capsule pairs, custom colour, custom engraving |
Product overview
The SCHOEPS MK 21 is a wide cardioid microphone capsule for the Colette modular system, combining the warm sound of an omni with the directivity of a cardioid.
The directivity of the wide cardioid lies between the omni and the cardioid, and the idea behind its development is to combine the advantages of both patterns. The low-frequency behaviour of the MK 21 is better than that of a cardioid, and proximity effect is less pronounced. Its polar pattern is extremely consistent across the frequency range, so laterally arriving direct sound and reflections are picked up without added colouration.
The MK 21 is a very well-liked capsule, preferred when a slight directional effect and a warm, natural sound image are wanted, and over the years it has become an integral part of the audio engineer's toolkit. It screws onto a Colette microphone amplifier such as the CMC 6, CMC 1 U or CMC 1 L.
| Pickup pattern | Wide cardioid |
| Equivalent noise (A-weighted) | 13 dB |
| Lower frequency limit | 30 Hz |
| Max. SPL with CMC 6 | 131 dB-SPL |
Key features
- Wide cardioid pattern between omni and cardioid
- Combines the warm sound of the omni with the directivity of the cardioid
- Extremely consistent polar response for a very natural sound
- Better low-frequency behaviour than a cardioid, less pronounced proximity effect
- Lateral direct sound and reflections picked up without added colouration
- Popular as a main microphone pair, for example at a spacing of 30 cm and an angle of ±45°
Practice
SCHOEPS names the MK 21 as a preferred soloist or main microphone. As a spot microphone it should be placed slightly closer to the source than a cardioid, because of its lower directivity index. MS and near-coincident spacings are often successful with this capsule.
Made for
- Soloist microphones
- Main microphone pairs, near-coincident spacings
- MS stereo
- Spot microphones placed slightly closer than a cardioid
In the box
- MK 21 wide cardioid capsule (a Colette microphone amplifier is needed, available separately)
SCHOEPS MK 21: frequently asked questions
What is a wide cardioid?
A pattern between the omni and the cardioid. It keeps much of the warm low-frequency sound of an omni while still giving a slight directional effect.
Is the MK 21 a complete microphone?
No. It is the capsule of the Colette modular system and screws onto a Colette microphone amplifier such as the CMC 6, CMC 1 U or CMC 1 L. It is also part of the Mono Set CMC 6, the Stereo Set CMC 6 and the Desert Island Stereo Set.
Which stereo techniques suit the MK 21?
MS and near-coincident spacings are often successful; a popular main pair uses a spacing of 30 cm and an angle of ±45°. For XY, a capsule with stronger directivity is the usual choice.
How close should it be as a spot microphone?
Slightly closer to the source than a cardioid, because of its lower directivity index.
Are other finishes available?
The standard finish is matte grey; SCHOEPS also offers custom colours such as Chromagreen and Smoked Silver, custom engraving and specially matched capsule pairs.
Where can I buy the SCHOEPS MK 21 in India?
The SCHOEPS MK 21 is available from Shivansh Electronics, Kolkata, West Bengal, India, with delivery across India.
Workflow 1: Main microphone pair
Classical engineers recording orchestras, choirs and ensembles.
Connections
| Connect | To |
|---|---|
| 2 x MK 21 + CMC 6 | Stereo bar on a stand |
| Amplifier outputs | Two matched preamp channels with P48 |
Setup
- Mount two MK 21 capsules at a spacing of 30 cm and an angle of ±45°.
- Use a matched capsule pair for close tolerances.
- Set both preamps to the same gain.
Tip: SCHOEPS names this spacing as a popular main pair with the MK 21.
Workflow 2: Soloist microphone
Engineers recording a soloist in front of an ensemble.
Connections
| Connect | To |
|---|---|
| MK 21 + CMC amplifier | Stand with clamp |
| Amplifier XLR-3M | Preamp input with P48 |
Setup
- Place the capsule towards the soloist.
- Adjust the distance for the balance of soloist and room.
- Set the gain.
Tip: Lateral sound is picked up without added colouration.
Workflow 3: Spot microphone
Engineers adding spots to a main pair.
Connections
| Connect | To |
|---|---|
| MK 21 + CMC amplifier | Stand near the instrument group |
| Amplifier | Preamp input |
Setup
- Place the spot slightly closer to the source than a cardioid would be.
- Aim at the instrument group.
- Blend with the main pair.
Tip: The lower directivity index calls for a slightly shorter distance.
Workflow 4: MS stereo
Recordists needing mono-compatible stereo.
Connections
| Connect | To |
|---|---|
| MK 21 (mid) + MK 8 (side) | Two Colette amplifiers |
| Outputs | Two preamp channels, MS decoded later |
Setup
- Mount the MK 21 as the mid microphone facing the source.
- Add a figure-eight capsule as the side microphone.
- Record both channels and decode MS in the mix.
Tip: SCHOEPS notes that MS is often successful with the MK 21.
Workflow 5: Near-coincident stereo
Engineers recording ensembles and ambience.
Connections
| Connect | To |
|---|---|
| 2 x MK 21 + amplifiers | Stereo bar |
| Outputs | Two preamp channels |
Setup
- Mount the pair at a near-coincident spacing.
- Angle the capsules towards the ensemble.
- Check the stereo image and adjust spacing or angle.
Tip: The warm low end of the wide cardioid keeps the room natural.
Workflow 6: Mono microphone set
Users starting with one complete Colette microphone.
Connections
| Connect | To |
|---|---|
| MK 21 | CMC 6 amplifier (Mono Set CMC 6) |
| CMC 6 XLR-3M | Preamp input with P48 |
Setup
- Screw the MK 21 onto the CMC 6.
- Mount the microphone on a stand clamp.
- Switch on phantom power and set the gain.
Tip: Other capsules can be added later on the same amplifier.








