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Differences Between CK31, CK32 and CK33 Capsules

Written by Gary Brindley

Updated at December 22nd, 2025

Table of Contents

Question: Answer:

Question:

What are the differences between CK31, CK32 and CK33 capsules?

Answer:

They are different in their polar patterns which is noted with the appropriate drawing above the capsule name.

A polar pattern defines how much of the signal will be picked up by the microphone from different directions.

These capsules are integrated into a rugged metal housing and fits any mounting module of the DAM Series.

To prevent contact problems the capsule is equipped with large-area, self-cleaning, gold-plated contacts with deep threads to prevent misalignment and ensure extra-long life. 

CK31 

Material number:

2765H00200

Cardioid a microphone having approximately uniform response over 180 degrees in front and minimum response in back, a polar curve representing its directional response being a cardioid.

CK32 

Material number:

2765H00210

Omnidirectional microphones that pickup sound with equal gain from all sides or directions of the microphone. This means that whether a user speaks into the microphone from the front, back, left or right side, the microphone will record the signals all with equal gain.

CK33

Material number:

2765X00220

Hyper-Cardioid A hyper-cardioid microphone has a very directional hyper-cardioid polar/pick up pattern. It is most sensitive to on-axis sounds (where the mic “points") with null points at 110° and 250° and a rear lobe of sensitivity. Hyper-cardioid mics are popular in film due to their high directionality.

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