Measurement microphone M 221

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The condenser microphone M 221 unifies universal small diaphragm capsule technology with a metal diaphragm and a modular preamplifier.

The use of a certificated measurement capsule combined with a preamplifier with 48 V phantom powering reaches a constant magnitude and phase response and transmission properties which are long-term stable.

Application
Because of the small capsule dimensions the M 221 is ideally suited for applications where a low interference with the sound field is demanded.

It is usable as a main microphone for recordings which should include a certain amount of the room response.

As well the M 221 is suited as a spot microphone for recording instruments very close where the low frequencies should be transmitted in detail and original.

Moreover it can be used for multichannel main microphone arrangements like AB stereophony or decca tree. For these applications the microphone is ideal because of its precise and long-time stable transmission properties.

The M 221 has an excellent transient response because of the pressure transducer capsule and is really suitable to record instruments with extreme transients.

With the both different sized spherical corpuses a high frequency accentuation can be produced in an acoustical way to increase the presence and to compensate the high frequency roll-off in the diffuse sound field.

technical data
Polar pattern omni
Acoustic operating principle pressure transducer
Frequency range 20 Hz to 20.000 Hz
Sensitivity at 1 kHz 50 mV/Pa
Output impedance 100 Ohm
Noise level CCIR 468-4 28 dB
DIN EN 60268-4 15 dB-A
Signal-to-noise ratio A-weighted 79 dB
SPL for THD 0,5 % 136 dB
Max. output level RL = 1 kOhm 18 dBu
RL = 10 kOhm 19 dBu
Dynamic range 121 dB
Current consumption 5,5 mA
Output connector XLR3M
Weight 123 g
Length 170,4 mm
Surface dark bronze