Microtech Gefell M 297

Description

condenser microphone
wide cardioid
small diaphragm capsule
nickel diaphragm
transistor pre-amplifier
phantom powering P48

specification

The microphone M 297 is in addition to the metal diaphragm microphone family which includes M 294/ 295 and M 296. The reliable microphone capsule M 70 forms a unit with the modified microphone preamplifier MV 200. These microphones are designed for universal applications in professional recording and sound reinforcement and meet the requirements of modern technology.

The developed, transformerless circuit design substitutes the previous transformer for a symmetrical output stage. Its intrinsic noise and remarkable output capability emphasize the advantages of the microphone capsule M70. A microphone capsule with an extremely thin metal diaphragm enables brilliant sound transmission. It is possible to activate a 10 dB attenuator pad for handling very high sound pressure levels. A sensitivity reduction for low frequencies can be utilized to suppress the proximity effect.

technical data

Polar pattern		wide cardioid
Acoustic operating principle		pressure gradient transducer
Frequency range		20 Hz to 20.000 Hz
Sensitivity at 1 kHz		15 mV/Pa
Switch position “reduced bass roll-off” at 60 Hz		-18 dB
Output impedance		150 Ohm
Noise level	CCIR 468-4	25 dB
	DIN EN 60268-4	15 dB-A
Signal-to-noise ratio	CCIR weighted	69 dB
	A-weighted	79 dB
SPL for THD 0,5 %		133 dB
with 10 dB preattenuation		143 dB
Dynamic range		118 dB
Current consumption		3 mA
Output connector		XLR3M
Weight		160 g
Length		166 mm
Diameter		21/25 mm
Surface		satin nickel, black matt