Schoeps CMC 1U – Small Colette microphone amplifier

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