M 900 - Microphone Microtech Gefell - Free user manual and instructions

Product Type	Condenser Microphone
Brand	Microtech Gefell
Model	M 900
Polar Pattern	Omnidirectional
Frequency Response	20 Hz - 20 kHz
Sensitivity	12 mV/Pa
Maximum SPL	130 dB
Output Impedance	50 Ω
Power Requirement	Phantom Power 48V ±4V
Connector	XLR 3-pin
Dimensions (Length x Diameter)	130 mm x 22 mm
Weight	150 g
Finish	Matte Nickel
Included Accessories	Mounting Clip, Windscreen, Carrying Case
Self Noise	14 dB-A
Dynamic Range	116 dB
Signal-to-Noise Ratio	80 dB-A
Operating Temperature Range	-10°C to 50°C
Humidity Range	0% to 90% (non-condensing)
Maintenance	Clean with a soft, dry cloth. Avoid solvents.
Safety	Do not expose to moisture or extreme temperatures. Use only with phantom power.
Reparability	Contact authorized service center for repairs. Do not disassemble.

Frequently Asked Questions - M 900 Microtech Gefell

What type of microphone is the Microtech Gefell M 900?

The M 900 is a condenser microphone with an omnidirectional polar pattern, ideal for measurement and recording applications.

What power supply does the M 900 require?

It requires phantom power of 48V ±4V, as is standard for professional condenser microphones.

What is the frequency response of the M 900?

The frequency response is 20 Hz to 20 kHz, providing accurate sound reproduction.

Can the M 900 handle high sound pressure levels?

Yes, it can handle up to 130 dB SPL before clipping, making it suitable for loud sources.

What connector does the M 900 use?

It uses a standard XLR 3-pin connector for balanced audio output.

How should I clean and maintain the M 900?

Clean the microphone with a soft, dry cloth. Avoid using solvents or abrasive materials. Store in a dry, dust-free environment.

What accessories are included with the M 900?

The package includes a mounting clip, a windscreen, and a carrying case.

Is the M 900 suitable for outdoor use?

It is designed for indoor use, but can be used outdoors with a windscreen. Avoid exposure to moisture and extreme temperatures.

What is the output impedance of the M 900?

The output impedance is 50 ohms, allowing it to drive long cable runs without signal degradation.

Where can I find the detailed user manual for the M 900?

The user manual is available for free download on notice-facile.com in PDF format. You can also request a translated version by email.

USER MANUAL M 900 Microtech Gefell

Studio Condenser Microphones for extraordinary demands with a future oriented design

large diameter pressure gradient transducer

M 900 with cardioid polar pattern

M 910 with hypercardioid polar pattern

The M 900 and M 910 condenser microphones have been developed for recordings of instrumental and vocal soloists in the professional market. Its well balanced frequency response in the free field as well as in the diffuse field and the appropriate distinct characteristics ensure clean and colourless recordings of any sound sources with good selectivity.

It is advisable to use the M 910 by soloists because it shows a specially optimised frequency response for this kind application.

A distance of less than 8 to 12 inches, which is recommended as minimum distance between lips and microphone, causes a coloration with an emphasis of lower frequencies, the proximity effect.

An acoustic filter integrated in the protective basket reduces the pop sensitivity. The direction of maximum sensitivity is axial, i.e. endwise to the microphone. This fact and the ergonomic design make these microphone the right choice for live performance of soloists.

Following the modern trend of technique the transducer is equipped with a gold plated polyester membrane.

The newly developed transformerless impedance transducer having a balanced output stage guarantees a high output capability and low intrinsic noise. Together with the good qualities of the microphone capsule a higt brilliance of the live performance is reached. A 10 dB attenuator is installed to reduce the sensitivity of the microphone when placed near extremely loud sound sources. And a low frequency roll-off switch will reduce the proximity effect when close miking. The two switches are sunk placed in the middle of the amplifier.

At the lower end of the amplifier the microphone is equipped with a 3-pin XLR connector fitting to the microphone cable C 70. These microphones use 48 volt phantom powering according to the international standards DIN 45596 and ICE 26815.

Black handheld microphone with mesh grille and circular head (no visible text or symbols)

Delivery

Microphone M 900 in wooden case dark bronze	L x B x H275 x 90 x 70 mm	Order-No. 211140
Microphone M 910 in wooden case dark bronze	L x B x H275 x 90 x 70 mm	Order-No. 211141

Accessories, optional

Windscreen, anthrazite		W 90	Order-No. 202403
Popscreen, black		PO 70	Order-No. 600018
Clamp, black		MKV 8	Order-No. 600014
Elastic suspension, dark bronze		EA 90	Order-No. 202314
Elastic suspension, anthracite	only for delivered by MTG	AT 8410 a	Order-No. 600004
Table stand, dark bronze		TS 90	Order-No. 212306
Table stand for 2 microphones		TS 68	Order-No. 202309
with Double mount, dark bronze		TD 93	Order-No. 202332
Power supply		N 200	Order-No. 202101
Connection cable		C 70	Order-No. 202212

Specifications

CE Certifikate

M 900

M 910

Transformerless Studio Condenser Microphone

Polar patterns	cardioid	hypercardioid
Acoustical operating principle	Pressure gradient transducer
Frequency range	40 ... 18000 Hz	40 ... 18000 Hz
Sensitivity at 1 kHz	17 mV/Pa	14 mV/Pa
Switch position "reduced bass roll-off" at 90 Hz	-10 dB	-10 dB
Rated impedance	150 Ω	150 Ω
Equivalent loudness level CCIR 468-4	21 dB	22 dB
due to inherent noise DIN EN 60 651	13 dB - A	15 dB - A
Signal-to-noise-ratio CCIR-weighted	73 dB	72 dB
(re. 1 Pa at 1 kHz) A-weighted	81 dB	79 dB
Max. SPL for THD 0,5 %≤	133 dB	135 dB
with 10 dB preattenuation	143 dB	145 dB
Total dynamic range of the microphone amplifier	120 dB	120 dB
Current consumption (P 48, DIN 45596, IEC 268-15)	3 mA	3 mA
Output connector		3-pin XLR connector goldplated contacts
Weight	229 g	229 g
Dimensions (L x ∅)	218 mm x 47/28 mm	218 mm x 47/28 mm
Finish	dark bronze	dark bronze

Frequency responses M 900

Frequency responses M 910