md 300 · acoustic operating principle pressure gradient transducer electrical operating principle...
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MD 300Dynamic microphonewith cardioid polar pattern
• optimized for broadcast applications
• frequency response optimizedfor intelligibility
• internal elastic capsule suspensionreduces handling noise
• non-reflecting, robustNEXTEL R� surface
MD 300
Dynamic microphone MD 300
The MD 300 is a high-quality dynamic microphone with a fre-quency response of the transmission factor that has beenoptimized for intelligibility. It is featured with an especiallyaccurate resolution at high frequencies and a well-balancedlow-frequency transmission. It is insensitive to movements ofthe recorded sound source thanks to the cardioid polar pat-tern.The MD 300 is useful as close-talking microphone for an-nouncers of broadcasting services as well as for high-qualityrecordings of vocalists and instrumental soloists during liveperformances.
Acoustical specificationsA dynamic capsule with a cardioid polar pattern is insertedin the MD 300 as sound transducer. The frequency responsehas been optimized for low recording distances with an ac-centuation of approximately 2 dB between 2 kHz and 8 kHz toraise the speech and high-frequency presence. The changeof the low end frequency response caused by the proximityeffect is well-balanced without a very strong overemphasisat small microphone distances.
Electrical specificationsThe sound transducer inserted into the MD 300 runs accor-ding to the moving-coil principle. The microphone is connec-ted by a standard 3-pin XLR-male plug with a symme-tric connection assignment. Because of the balanced low-impedance output, the MD 300 can be used for longer cablelength with negligible distortion. The polarity of the micropho-ne is in accordance with DIN 60268-4.
Mechanical specificationsThe housing of the microphone is equipped with an inte-grated internal thread at the plug side that allows fixing ela-stic or inflexible holders, which are available as accessories.This allows using the microphone with microphone arms orstand mountings and as handheld microphone. The capsuleis mounted elastically in the housing to attenuate solid-bornesounds and impulses. If a higher attenuation of such influ-ences is required, it can be achieved by elastic holders andsuspensions, which are available as accessories. Becauseof the weight of 330 g without accessories, the MD 300 canbe used for longer periods as handheld microphone with ne-gligible distortion.
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Product overview
Delivery
The standard delivery of the MD 300 includes
Dynamic microphone MD 300Microphone holder MH 80in cartonNEXTEL R� S 139 Order-No. 2111155
Accessories
The following accessories are available optionally
Microphone holder MH 80NEXTEL R� S 139 Order-No. 202387Microphone holder, turnable MH 30NEXTEL R� S 139 Order-No. 202388Elastic suspension EA 30NEXTEL R� S 139 Order-No. 202389Elastic suspension EA 92black matt Order-No. 202359Connection cable C 70 Order-No. 202212
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Technical specifications
Polar pattern CardioidAcoustic operating principle Pressure gradient transducerElectrical operating principle Moving-coil principleFrequency range 50 - 16 000 HzSensitivity 1,6 mV/PaRated impedance 220 OhmLoad impedance ≥1 kOhmMagnetic field disturbing factor at 50 Hz ≤1 V/TOutput connector XLR3MWeight 330 gLength 173 mmDiameter Protection grid 47 mm
Housing 40 mmSurface NEXTEL R� S 139
Frequency response and Polar pattern
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Microtech Gefell GmbH · Georg-Neumann-Platz · 07926 Gefell · GermanyPhone +49 (0)36649 882-0 · Fax +49 (0)36649 882-11 · www.microtechgefell.de · [email protected]
P.EN 201186.02 (18.01.2016) c�Microtech Gefell GmbH 4