[Boatanchors] Dreaded D-104

[Bob Kulow]

There is another factor called proximity effect.  

Most directional microphones, cardioid, bi-directional, etc., will
exhibit an emphasized bass response when the source of sound is close.

The E-V 664 and other older E-V microphones use a different method of
obtaining the cardioid pattern from other manufacturers.  This almost
eliminates the bass boost for close-in sounds.

While guest lecturing at a college class in advanced recording
techniques, I demonstrate the effect by using a Shure SM-57 and an E-V
664A.  The difference with close talking is very obvious.  The E-V still
sounds natural when I speak close to the grill while the Shure sounds
"boomy" and intelligibility suffers.

I would expect the Heil microphones to suffer from the same proximity
effect as the Shure.

73
Bob WA2UEH