The CCM 4 is optimized for maximum rejection of rear-incident sound. Typical of the classic cardioid, at 90 degrees to its axis the attenuation is 6 dB, while from the rear (180degrees) it can be as much as 30 dB, depending on the frequency. The random energy efficiency - the ratio of on-axis sensitivity to diffuse sound field efficiency is 4.8 dB. (The higher this figure, the less room sound is picked up by a microphone, and the less susceptible it is to acoustic feedback.)
Due to its directivity, the CCM 4 can be placed 1.7 times farther from the sound source than a pressure transducer of equivalent sensitivity, while maintaining the same proportion of direct and reverberant sound. In the diffuse sound field (distant from a sound source in a room, for instance), this microphone type has flat frequency response except for a slight emphasis around 10 kHz.
It is ideal for speech as well as for music recordings, with a well-defined sound image free of coloration. When used for X/Y recording or as a Mid microphone in a Mid-Side configuration, it delivers exceptional results. It is also the capsule intended for use with our ORTF stereo microphone.
This microphone type has the most general applicability and is the type most widely used
- cardioid for lateral pickup
- for universal application
- slight high-frequency emphasis
The CCM 4V was created in answer to requests for a cardioid microphone whose main axis is along the side of the capsule. In addition to its usefulness in the concert hall, this microphone type is of particular value in speech recording, since its slight emphasis around 10 kHz helps to improve intelligibility.
The directional response is especially well maintained even at higher frequencies, due to the acoustically transparent housing. High frequency emphasis of off-axis sound - typical of most small axial-response cardioids - occurs less with the CCM 4V, but because of its inherent frequency response, it still sounds somewhat brighter overall than the CCM 4.
Surface finish : matte gray (g) or nickel (ni)