







SCHOEPS CMC 1 U
PRICE ON ENQUIRY
SCHOEPS CMC 1 U compact Colette microphone amplifier, XLR-3M: one-third the length of the CMC 6, 135 dB-SPL, 2 mA, RFI Shield. Available in India from Shivansh Electronics, Kolkata, West Bengal, India.
VISUAL GUIDE — See Every Photo, Spec & Setup Step (PDF)
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Electrical
| Frequency range | 20 Hz - 20 kHz |
| Sensitivity | See corresponding capsule |
| Maximum output voltage | 1.8 V (5 dBV) with 1 kΩ load |
| Maximum sound pressure level (THD < 0.5 %) | 135 dB-SPL (P48) with MK 4; 131 dB-SPL (P12) with MK 4 |
| Low cut filter | 20 Hz, 12 dB/oct. |
| Output impedance | 50 Ω ± 1 Ω (8 Hz - 50 kHz) |
| Minimum recommended load impedance | 1 kΩ |
| Common mode rejection ratio (at 1 kHz) | > 55 dB |
| Maximum cable length | > 400 m |
| SCHOEPS RFI Shield | Yes |
| Powering standard / valid range | P48 / 30 - 52 V; P12 / 11 - 13 V |
| Current consumption | 2 mA (P48); 3 mA (P12) |
| Output | XLR-3M, analog, 1 channel |
Physical
| Length | 36 mm |
| Diameter | 20 mm |
| Weight | 36 g |
| Surface finish | Matte grey; custom colours Chromagreen, Smoked Silver |
System
| Series | Colette modular system, CMC 1 family |
| Matching capsules | MK 2, MK 21, MK 22, MK 4, MK 41, MK 8, KMIT and all other Colette capsules |
| Options | No. 191102 custom colour, No. 191201 custom engraving |
| Included | SG 20 stand clamp |
Product overview
The SCHOEPS CMC 1 U is the small Colette microphone amplifier with an XLR-3M output: about one-third the length of the CMC 6 and 53 % lighter, and a complete alternative to it.
The CMC 1 is compatible with all components of the Colette system and can replace the CMC 6 without compromise in every application where the size and weight of the microphone play a role. It is fully compatible with all existing MK capsules and with Colette active accessories such as the CUT 60 low-cut filter and the RC active extension tubes.
At SCHOEPS, "uncompromising miniaturisation" means that the electrical characteristics of the CMC 1 are equal to, or even better than, those of the CMC 6. Modern electronic design gives a high maximum sound pressure level of 135 dB-SPL with the MK 4, a very low current consumption of 2 mA at 48 V and very high immunity from RF interference with the SCHOEPS RFI Shield. The CMC 1 works with standard 12 V or 48 V phantom power; its power consumption is lower at 12 V, an advantage for battery-powered operation.
| Length, 36 g | 36 mm |
| Max. SPL with MK 4 (P48) | 135 dB-SPL |
| Current at P48 | 2 mA |
| Lighter than the CMC 6 | 53 % |
Key features
- Complete alternative to the CMC 6, about one-third the length and 53 % lighter
- Fully compatible with all MK capsules and Colette active accessories such as the CUT 60 and RC tubes
- High maximum SPL: 135 dB-SPL with the MK 4 at P48 (THD 0.5 % or less)
- Very low current consumption: 2 mA at 48 V
- Works on 48 V or 12 V phantom power, reliable even if powering is somewhat marginal
- SCHOEPS RFI Shield: very high immunity from RF interference and high immunity to cable-induced hum
- Flat frequency response, very low distortion, constant output impedance across the audio range
- Balanced, direct-coupled class-A output; output filtered in the ultrasonic range, e.g. against camera autofocus
The CMC 1 family
The CMC 1 is available in five housing variants: CMC 1 U with XLR-3M output, CMC 1 L with Lemo output, CMC 1 K with a fixed attached cable, CMC 1 KV with a laterally outgoing cable and CMC 1 SO with a fixed gooseneck and 3-pin Lemo output for a pocket transmitter. Custom colours (Chromagreen, Smoked Silver) and custom engraving are available.
Made for
- Every application where microphone size and weight play a role
- Compact Colette microphones with any MK capsule
- Conference and video conferencing (CMC 1 Table Set)
- Violin and other instruments (RC Set "Violin")
- Mono and stereo sets, also with an elastically suspended windshield
In the box
- CMC 1 U microphone amplifier
- SG 20 stand clamp for 20/21 mm
- An MK capsule of the Colette system is needed, available separately
SCHOEPS CMC 1 U: frequently asked questions
Can the CMC 1 U replace a CMC 6?
Yes. It is a complete alternative to the CMC 6, compatible with all Colette components, and its electrical characteristics are equal to or even better than those of the CMC 6, in a housing about one-third the length.
Which capsules and accessories fit?
All existing MK capsules, for example the MK 2, MK 21, MK 22, MK 4, MK 41 and MK 8, and the Colette active accessories such as the CUT 60 low-cut filter and the RC active extension tubes.
What is the difference between the CMC 1 U and the CMC 1 L?
The CMC 1 U has a built-in XLR-3M output connector and is 36 mm long; the CMC 1 L has a miniature Lemo output and is 25.5 mm long. Electrically they are the same.
Does it work on 12 V phantom power?
Yes. It works on P48 (30 - 52 V) at 2 mA and on P12 (11 - 13 V) at 3 mA. Power consumption is lower at 12 V, an advantage for battery-powered operation.
Are elastic suspensions available for it?
Yes, suitable elastic suspensions for the CMC 1 U are available, and SCHOEPS offers the CMC 1 in mono and stereo sets, a table set and a windshield set.
Where can I buy the SCHOEPS CMC 1 U in India?
The SCHOEPS CMC 1 U is available from Shivansh Electronics, Kolkata, West Bengal, India, with delivery across India.
Workflow 1: Compact Colette microphone
Engineers who want the Colette sound in a short, light microphone.
Connections
| Connect | To |
|---|---|
| MK capsule | CMC 1 U (screw thread) |
| CMC 1 U XLR-3M | Microphone input with P48 or P12 |
Setup
- Screw the chosen MK capsule onto the CMC 1 U.
- Mount it in the SG 20 stand clamp.
- Connect a balanced microphone cable and switch on phantom power.
Tip: The whole microphone is far shorter than with a CMC 6, with the same or better electrical figures.
Workflow 2: Light microphone in a windshield
Location recordists for whom weight on the pole matters.
Connections
| Connect | To |
|---|---|
| MK capsule + CMC 1 U | Elastic suspension or windshield |
| CMC 1 U | Recorder input with phantom power |
Setup
- Mount the microphone in an elastic suspension or windshield.
- Connect the XLR cable to the recorder.
- Set the gain and record.
Tip: The CMC 1 U is 53 % lighter than the CMC 6; SCHOEPS also offers a CMC 1 mono windshield set.
Workflow 3: Conference and video conferencing
Installers equipping meeting tables.
Connections
| Connect | To |
|---|---|
| MK capsule + CMC 1 U | TC, TC 2 or T 20 miniature table stand |
| CMC 1 U | Conference mixer input with P48 |
Setup
- Place the microphone on a miniature table stand.
- Aim the capsule at the talker positions.
- Set the gain for speech.
Tip: The CMC 1 Table Set is a ready-made combination for this use.
Workflow 4: Microphone on a violin
String players and engineers using instrument-mounted microphones.
Connections
| Connect | To |
|---|---|
| MK capsule + RC tube | CMC 1 U |
| CMC 1 U | Preamp with P48 |
Setup
- Assemble capsule, RC active extension tube and CMC 1 U.
- Mount the capsule at the instrument.
- Connect to the preamp and set the gain.
Tip: SCHOEPS offers the complete RC Set "Violin".
Workflow 5: Stereo pair
Engineers recording ensembles and ambience in stereo.
Connections
| Connect | To |
|---|---|
| 2 x MK capsule + CMC 1 U | Stereo bar |
| Two XLR outputs | Two matched preamp channels |
Setup
- Fit identical capsules to two CMC 1 U amplifiers.
- Mount them on a stereo bar.
- Set both preamps to the same gain.
Tip: The short housings keep a stereo array compact; a Stereo Set CMC 1 is available.
Workflow 6: Battery-powered recording
Field recordists working from battery power.
Connections
| Connect | To |
|---|---|
| MK capsule + CMC 1 U | Portable recorder input with P12 or P48 |
Setup
- Select 12 V or 48 V phantom power on the recorder.
- Connect the microphone.
- Record as usual.
Tip: At 2 mA (P48) or 3 mA (P12) the CMC 1 draws very little power.








