Schoeps Mikrofone CMC 1 U Microphone Amplifier

The CMC 1 is our new, 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 miniaturisation” 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 & other interference (field tested with Audio Limited A 10.)
• 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

Features

• Complete alternative to the renowned CMC 6
• Fully compatible with all existing MK capsules and Colette active accessories such as the CUT 60 and RC tubes
• Suitable mounting accessories are already available, such as the CINELA E-OSIX-CMC1U and the Rycote INV-6 elastic suspensions.

Practice

Alignment of vertical capsules with the CMC 1/6:

The CMC 1 U can be used in many suspensions (e.g. OSIX) that have a rigid orientation of the XLR connector and thus the amplifier. Also in the compatible MS and dual MS setups (for example, Cyclone), the alignment is fixed. As a result, the microphone cannot be rotated arbitrarily in such a suspension. For axially aligned capsules like the MK 4 this is not important, but a vertical capsule like the MK 8 has to be aligned radially.

In such cases, this accessory helps:

No. 800540: O-ring for radial alignment of a MK capsule. This O-ring is placed on the thread of the amplifier and makes the MK capsule permanently stable in any orientation. The O-ring is included with the MK 8 and all other vertical capsules (MK 4V, 41V) and can also be ordered separately.

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 / ~1300 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 grey

                         - Custom colour: nickel, chromagreen

Variants & Options

The CMC 1 is available in three variants:

• CMC 1 U: XLR-3M output connector
• CMC 1 L: Lemo output connector
• CMC 1 K: permanently attached cable; standard version, 5 m with XLR-3M output plug. Other connectors or unterminated cable will be available on special order.
• No. 191102 custom colour: nickel, chromagreen, other custom colours on request
• No. 191201 custom engraving