Gefell MD300

It is featured with an especially accurate resolution at high frequencies and a well-balanced lowfrequency 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 performances or as spot microphone in music production.

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 distortion.

• Optimized for broadcast applications

• Frequency response optimized for intelligibility

• Internal elastic capsule suspension reduces handling noise

• Non-reflecting, robust NEXTEL R surface

POLAR PATTERN:

Cardioid

OPERATING PRINCIPLE:

• acoustic: Pressure gradient transducer

• electrical: Moving-coil principle

FREQUENCY RANGE:

50 ... 16000 Hz

SENSITIVITY:

1,6 mV / Pa ± 3 dB

RATED IMPEDANCE:

220 ± 30 %

LOAD IMPEDANCE:

1 k

MAGNETIC FIELD DISTURBING FACTOR AT 50 HZ:

1 V/T

OUTPUT CONNECTOR:

XLR-3 pin, gold contact

WEIGHT:

330 g

LENGTH:

173 mm

DIAMETER:

Protection grid 47mm, Housing 40mm

SURFACE:

Nextel S 139