MD 300

Dynamic microphone
with cardioid polar pattern


  • optimized for broadcast applications
  • frequency response optimized
    for intelligibility
  • internal elastic capsule suspension
    reduces handling noise
  • non-reflecting, robust
    NEXTEL® surface




The MD300 is a high-quality dynamic microphone with a frequency
response of the transmission factor that has been
optimized for intelligibility. It is featured with an especially
accurate resolution at high frequencies and a well-balanced
low-frequency transmission. It is insensitive to movements of
the recorded sound source thanks to the cardioid polar pattern.
The MD300 is useful as close-talking microphone for announcers
of broadcasting services as well as for high-quality
recordings of vocalists and instrumental soloists during live


Acoustical specifications

A dynamic capsule with a cardioid polar pattern is inserted
in the MD300 as sound transducer. The frequency response
has been optimized for low recording distances with an accentuation
of approximately 2 dB between 2 kHz and 8 kHz to
raise the speech and high-frequency presence. The change
of the low end frequency response caused by the proximity
effect is well-balanced without a very strong overemphasis
at small microphone distances.


Electrical specifications

The sound transducer inserted into the MD300 runs according
to the moving-coil principle. The microphone is connected
by a standard 3-pin XLR-male plug with a symmetric
connection assignment. Because of the balanced lowimpedance
output, the MD300 can be used for longer cable
length with negligible distortion. The polarity of the microphone
is in accordance with DIN 60268-4.

Mechanical specifications

The housing of the microphone is equipped with an integrated
internal thread at the plug side that allows fixing elastic
or inflexible holders, which are available as accessories.
This allows using the microphone with microphone arms or
stand mountings and as handheld microphone. The capsule
is mounted elastically in the housing to attenuate solid-borne
sounds and impulses. If a higher attenuation of such influences
is required, it can be achieved by elastic holders and
suspensions, which are available as accessories. Because
of the weight of 330 g without accessories, the MD300 can
be used for longer periods as handheld microphone with negligible



Technische Daten

Dynamic Microphone
MD 300
Polar pattern

Operating principle
acoustic: Pressure gradient transducer
electrical:                Moving-coil principle
Frequency range
50 ... 16000 Hz
Sensitivity at 1 kHz
1,6 mV
Rated impedance
220 Ω ± 30 %
Load impedance
≥ 1 k Ω
Magnetic field disturbing factor at 50 Hz
≤ 1 V/T
Output connector
330 g
173 mm
Protection grid                               47mm
Housing                               40mm

Frequency response

Polar pattern



Dynamic microphone MD300
Microphone holder MH80
in carton
NEXTEL® S 139 Order.No. 2111155



Microphone holder MH80  Best.-Nr. 202387
Microphone holder, turnable MH30
 Best.-Nr. 202388
Elastic suspension EA 30  Best.-Nr. 202389
Elastic suspension EA 92 Best.-Nr. 202359
Mikrofonanschlusskabel C 70 Best.-Nr. 202212



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