Schoeps CMC 1U – Small Colette microphone amplifier + Schoeps MK5 Omni / Cardiod Mic Capsule

The CMC 1 is a small Colette microphone amplifier, about one-third the length and 53% lighter than the CMC 6. It is compatible with all components of the Colette system and can be used in place of the CMC 6 without compromise, for all applications in which the size and weight of the microphone play a role.

At SCHOEPS, “uncompromising miniaturization” means that the electrical characteristics of the CMC 1 are equal to, or even better than, those of the CMC 6. Through modern electronic design, these outstanding electrical properties have been achieved:

• high maximum SPL: 135 dB-SPL with the MK 4 (0.5% THD or less)
• very low current consumption: 2.0 mA at 48 Volts
• operates on 48 V or 12 V phantom power, reliable operation even if powering is somewhat marginal
• very high immunity from RF interference with the SCHOEPS RFI Shield; high immunity to cable-induced hum and other interference (field tested with Audio Limited A 10, etc.)
• flat frequency response
• very low distortion constant output impedance across the audio frequency range
• balanced, direct-coupled, class-A output circuit
• output is filtered in the ultrasonic range to prevent interference, e.g. from camera autofocus

A complete Colette-series microphone consists of an MK capsule and a CMC amplifier. All capsules and active accessories of the Colette system are compatible with the CMC 1.

The CMC 1 works with standard 12-Volt or 48-Volt phantom powering. Power consumption is lower at 12 Volts–an advantage for battery-powered operation.

TECHNICAL SPECIFICATIONS

• 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 (~1,300 ft)
• 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
• Length: 36 mm / ~1.4″
• Diameter: 20 mm / 0.8″
• Weight: 36 g / 1.3 oz
• Surface finish: matte gray
• Custom color: nickel, chromagreen

Schoeps MK5 Omni / Cardiod Mic Capsule

• omni and cardioid patterns, mechanically switchable
• slight emphasis of the high frequencies
• broad range of applications
• preferred uses similar to those of the MK 2 or MK 2S and the MK 4:
• in the cardioid setting: for use with singing or speaking voices or most instruments, as a spot microphone, and for stereo recording with coincident, ORTF or M/S microphone arrangements
• in the omni setting: for recording instruments, singers, etc. at relatively close range

The MK 5 offers two selectable directional patterns, but uses only one membrane – a no-compromise approach. The fact that full response is maintained to the highest audible frequencies is unusual for a switchable-pattern microphone.

In its omnidirectional setting the MK 5 is a true pressure transducer with smooth, extended low-frequency response, low sensitivity to most wind and breath noise, handling noise or mechanical vibration, and no proximity effect.

Unlike conventional, dual-diaphragm multi-pattern microphones, its cardioid setting retains its full directionality even at very low frequencies. The benefits of this design in purity and clarity of sound are immediately audible.

The MK 5 has a slight high-frequency emphasis as compared with the corresponding single-pattern omni (MK 2) and cardioid (MK 4).

• Although our normal production tolerances are very close, we can deliver specially matched capsule pairs for a small extra charge.

Application

The MK 5 is nearly an all-purpose capsule. It is what we recommend for those starting out with the Colette series, unless particular circumstances (such as the need for greater directivity or a bidirectional pattern) would indicate a different choice.

(Please note: The pattern selector should be definitely set to one position or the other; in-between settings will yield undefined results.)

Specifications

MK 5 – omni

• Frequency range_x0009_20 Hz – 20 kHz
• Sensitivity_x0009_10 mV/Pa
• Equivalent noise level (A-weighted)_x0009_14 dB-A
• Equivalent noise level (CCIR)_x0009_26 dB
• Sinal-to-noise ratio (A-weighted)_x0009_80 dB-A
• Maximum sound pressure level at 0.5% THD_x0009_133 dB-SPL

MK 5 – cardioid

• Frequency range_x0009_40 Hz – 20 kHz
• Sensitivity_x0009_13 mV/Pa
• Equivalent noise level (A-weighted)_x0009_15 dB-A
• Equivalent noise level (CCIR)_x0009_24 dB
• Signal-to-noise ratio (A-weighted)_x0009_79 dB-A
• Maximum sound pressure level at 0.5% THD_x0009_132 dB-SPL

Mechanical specifications

• Length_x0009_27 mm
• Diameter_x0009_20 mm
• Equivalent noise level (A-weighted)_x0009_15 dB-A
• Weight_x0009_25 g
• Surface finish_x0009_matte gray (g) or nickel (ni)