SCHOEPS CCM 8 Lg Compact Microphone, Fig-8
This capsule type is a true dipole (bidirectional) transducer, operating with a single diaphragm. Its main axis is at a right angle to the capsule, and is marked at 0° and 180° with a red and a black dot respectively.
The inherent qualities of a pure pressure-gradient transducer are readily observed in this capsule type:
- Its sensitivity decreases at low frequencies.
- The directional characteristic is extraordinarily independent of frequency.
- Proximity effect is present.
The directivity index of a figure-8 pattern is the same as that of a cardioid; if microphones with these two patterns are placed at the same distance from a sound source, a quantitatively similar balance of direct and reverberant sound would be picked up. In practice such a comparison would be deceptive, however, since a figure-8 does not respond to sound coming from the sides, from above or from beneath its main axis as does a cardioid. The figure-8 has a rear lobe equal in sensitivity to its front lobe, and this exactly makes up the quantitative difference – but in normally reverberant settings, the sound reaching a figure-8's rear lobe will be delayed and dispersed to a considerably greater extent than the reverberant sound energy which a cardioid picks up from its front and sides; the reflected sound will typically be subject to far more high frequency absorption as well. Thus the reverberant sound energy picked up by a figure-8, though theoretically equal in amount, is quite different in character from that which would be picked up by a cardioid in the same position.
The sound quality of the CCM/MK 8 is clear and neutral.
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TECHNICAL SPECIFICATIONS
Frequency range 40 Hz - 15 kHz
Sensitivity -38,5 dB (V/Pa)
Maximum sound pressure level (THD < 0.5 %) 136 dB-SPL (P48)
128 dB-SPL (P12)Maximum output voltage 2,6 V (8,3 dbV) with 2 kΩ load
Low cut filter 20 Hz, 12 dB/Okt
Output impedance 90 Ω @ 1 kHz
Maximum cable length > 400 m
SCHOEPS RFI Shield No
Powering standard / Valid range P48 / >40 V
P12 / >10 VCurrent consumption 4 mA (P48)
3,6 mA (P12)Common mode rejection ratio (at 1 kHz) > 55 dB
Minimum recommended load impedance 2 kΩ
Output Lemo (CCM-L) or XLR-3M (CCM-K),
analog, 1 channelLength 58 mm
Diameter 20 mm
Weight 43 g