CMC 621H

Common name: Schoeps CMC 621H

Production Status: In production

The CMC 621H is a small diaphragm omnidirectional condenser microphone. The capsule has a mild high-frequency elevation above 6 kHz to compensate for slight diffuse-field losses at medium pickup distances. It is ideal for acoustic instruments and orchestras in well balanced reverberant spaces. For stereo A/B and Decca Tree setups the KA 40 accessory spheres are recommended. The microphone amplifier CMC 6 U and the capsule MK 21H form part of a modular microphone which permits the insertion of RC tubes or KC cables as well as other electronically active accessories between capsule and amplifier allowing for miniaturisation.The CMC 6U Amplifier offers a symmetrical, transformer-less, direct-coupled Class A output stage with low impedance, distortion, and interference. It is designed for standard 48 and 12 V phantom powering. Its circuitry recognises the supply voltage and adjusts itself automatically. Includes wooden box, SG 20 stand mount clamp and B 5 D windscreen. It is also available as the compact condenser microphone CCM 21H. Matched pairs are available although normal production tolerances are very close. Custom colours are available on request.

Electrical Characteristics

Frequency Response
30Hz - 20 kHz
Output Sensitivity
10 mV/Pa
Max SPL
134
Max SPL, THD:
0.5
Self Noise (CCIR)
26 dB
Self Noise (DIN/IEC)
16 dB-A
Output Impedance
42Ω
Recommended Load
1kΩ
Powering
Phantom 12-48
Supply Current
4 mA
Alternative Powering

Switchable Options

Pad
Filter/EQ
20 Hz, 12 dB/oct.

Physical Characteristics

Connector
XLR-3M
Connector notes
Available Colours
Matte Grey. Nickel. Chromagreen.
Weight
102 g
Length
137 mm
Min diameter width
Max diameter
20 mm
Depth

Accessories

Included
Wooden box. SG 20 stand clamp. B 5 D windscreen.
Optional
KA 40 sphere. RC set Singer. RC set Violin. RC. R 2 C KC. B 1 D foam pop screen. B 5 D foam pop screen. W 5 wind screen. BBG windshield. W 20 windscreen basket. W 20 R1 windscreen basket with fur. B 20 speech guard. KC active insertion cable. Cut 60 low-cut filter. Pad 10/20 C attenuator. GVC capsule swivel.