Schoeps MK21 Wide Cardioid Capsule

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 custom color: Chromagreen, Smoked Silver (looks like the classic Schoeps nickel)