CV4 Tube Microphone Owners Manual

Near Coincidental

Near coincidental or AB mic set up used two matched microphones

set relatively close together, facing in opposite directions. The

spacing between the microphones creates a time delay adding

to the stereo effect. The greater the angle the greater the stereo

spread. Less of an angle yields a more narrow spread. There are

a few standards that specify different angles and spacing, with

the most popular being the ORTF (the acronym given to the

French Broadcasting Organization which stands for Office de

Radiodiffusion Television Française). The ORTF standard specifies

the capsules to be spaced 17cm apart and set at a 110-degree

opposing angle. In this setup the stereo image is created by the

differences between level and time. The stereo image is sharp

however it tends not to be mono compatible.

Spaced Pairs

The spaced pair approach uses two identical microphones set rather

far apart, for example 2 to 20 feet, or more apart, both facing directly at the sound source. The further apart that the

micro phones are placed, the wider the stereo spread.

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