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Schoeps 话筒麦克风 MK 21G 话筒头 微型话筒  Schoeps MK21

话筒拾音头 MK 21g 宽心形

宽心形拾音头在全频率范围内具有十分一致的指向性

让人惬意的声音效果，常被形容为“温暖声”通常适用于点话筒或在全立体声拾音中用作话筒对

该类型拾音头的指向性介于全向和心形之间。这种拾音头的基本设计思想是将心形与全向拾音头的优势结合在一起，这样就能获得混合了两种指向特性的拾音模式。它比心形具有更多的低频响应、更少的近讲效应，同时比心形拾音头更容易拾取到更多的空间声音。

极性图表所示MK 21的指向性受频率影响很小。这与全向拾音头（指向性随频率的升高而加大）和心形（更趋向高频）形成鲜明的对比。MK 21不需要心形那么严格的方向性，因为直达声到达轴向，同时混响声或其它离轴声也可以被正确地再生。缺少偏离轴

向拾取音的染色，就可以制作出“温暖”、自然的音效。

虽然M/S摆放模式通常是很成功的，对于X/Y模式的应用，这种类型话筒的低指向性可以防止产生强度很大的电平差异。

继心形和超心形，这种话筒是我们所有话筒中的首选。

长度：22mm

直径：20mm

重量：17g

MK 21 MICROPHONE CAPSULE

PROPERTIES

wide cardioid

preferred uses: as a soloist microphone or main microphone

extremely consistent polar response leads to a very natural sound

combines the advantages of the omni (warm sound) and the cardioid (directivity)

popular as a main microphone pair e.g. at a spacing of 30 cm, angle +/- 45°

DESCRIPTION

The directivity of the wide cardioid lies between the omni and the cardioid. The idea behind their development is to combine the advantages of these two patterns. The low-frequency behaviour of the MK 21 is better than that of the cardioid, and proximity effect is less pronounced. The wide cardioid polar pattern is extremely consistent across the frequency range. Laterally-arriving direct sound and reflections are picked up without added coloration. The MK 21 is a very well-liked capsule. It is preferred when a slight directional effect and a warm, natural sound image are desired. Over the years it has become an integral part of the audio engineer's toolkit.

PRACTICE

When used as a spot microphone, the distance from the sound source should be slightly smaller than when using a cardioid due to lower directivity index.

The low directivity of this capsule type prevents it from generating large enough level differences for X/Y use, though MS and near-coincident spacings are often successful.

TECHNICAL SPECIFICATIONS

Pickup pattern

Wide Cardioid

Frequency range : 30 Hz - 29 kHz with CMC 6 / CMR  30 Hz - 44 kHz with CMC 6xt

Sensitivity : -37 dB (V/Pa), 14 mV/Pa with CMC 6

Equivalent noise level (A-weighted) : 13 dB with CMC 6

Equivalent noise level (CCIR) : 23 dB with CMC 6

Signal-to-noise ratio (A-weighted) : 81 dB with CMC 6

Maximum sound pressure level (THD < 0.5 %) : 131 dB-SPL with CMC 6

Length : 22 mm

Diameter : 20 mm

Weight : 17 g

Surface finish : matte gray (g) or custom color