XY Stereo Microphone

User Guide

2 × cardioid with lateral pickup

compact, elegant and lightweight

universally applicable

the angle between the microphones is adjustable

with XLR-5M or miniature output connector

The CMXY 4V is a compact and versatile X/Y stereo microphone which is both elegant and very unobtrusive. Its mild high-frequency boost increases the intelligibility of speech and compensates for high-frequency losses typical of moderate recording distances. It thus lends itself ideally to music recordings, TV and broadcast use, e.g. on a table for discussions, for presenters, boom operations or as a stereo spot microphone on a stand.

The side-by-side arrangement of capsules is somewhat unusual.

But there can never be perfect three-dimensional coincidence between any two microphones, and the distance between center points of the capsules in a CMXY is only 21 mm. While this distance is in the horizontal plane, it is considerably less than the vertical distance between capsules in most other stereo microphones of professional quality. Thus the precision of stereo imaging and mono compatibility are fully in keeping with established professional requirements.
The overall width of the two microphones combined is similar to (often less than) the diameter of a conventional stereo microphone’s capsule assembly. This is possible by using the smallest non-electret condenser microphones with balanced outputs, the CCM Compact Condenser Microphones.


Unlike conventional microphones which have one fixed and one rotatable capsule, the angle between the capsules of the CMXY 4V (and hence the recording angle, which is the range within which the sound sources should be placed, as “seen“ by the microphone) can be adjusted with out affecting the main stereo axis. The capsules always rotate equally and in opposite directions by means of an ingenious gear arrangement in the base of the microphone. This greatly simplifies setting up the microphone.

The CMXY 4V has balanced outputs at an impedance of only 90 Ohms. This allows cable lengths of up to several hundred meters to be used without loss of sound quality, while the risk of electromagnetic interference is greatly reduced.

Two versions are available:

CMXY 4V Ig: miniature output connector;
the KS 5 IU adapter cable to XLR-5M is included.

CMXY 4V Ug: XLR-5M output plug;
The adapter cable AK SU/2U (XLR-5F to 2 × XLR-3M) is included.

If the “basket”-type windscreen WSR CMXY is to be used, the version of the microphone with miniature output connector (“I”) would be preferable. If the version with XLR-5M connector (“U”) must be used with this windscreen, a short (right-angle) XLR connector is required on the cable to avoid its scraping against the inside of the “basket.”

When any microphone is placed near (but not directly onto) a flat surface, comb-filter effects will occur. These can be reduced if the surface (e.g. the table top) consists of a perforated material.

Frequency response and polar diagram of the CCM 4V
Technical Details
Directional pattern: 2 × cardioid with lateral pickup (CCM 4V)
Frequency response: 40 Hz - 20 kHz
Sensitivity: 13 mV/Pa
Maximum sound pressure level at 0.5% THD: 132 dB-SPL
Equivalent noise level (A-weighted): 14 dB-A
Equivalent noise level (CCIR): 24 dB
Powering: phantom powering: 12 V ± 1 V (8 mA)
or 48 V ± 4 V (4 mA), automatically switched
Output impedance: 90 Ω
Maximum output voltage: ca. 1 V
Length: I-version: 110 mm, U-version: 119 mm
Width: max. 43 mm
Depth: max. 22 mm