With renewed respect for the low noise of the sennheiser shotguns (
and I already use them for video work) ...would it be possible
to force more cardiod behavior on a Sennheiser ME-66 for parabolic
use? Any thoughts on knocking out the interference tube function in
some reversible 'mod' way??? ( ie, interchangeable slotted tube ...
extra open/close vents ...reflective vanes ...re-orienting the
capsule). I think a hack, ala hacksaw, might be ok if it opens up
more uses for the mic as a multipurpose tool.) Am I pondering idiocy?
-paul
--- In Walter Knapp <>
wrote:
>
> Posted by: "Lou Judson"
>
> > Idle curiosity, mostly. I have not used parabolics. Perhaps you'd
put
> > the shotgun back far enough from the dish to encompass its
entire
> > diameter... what, a foot, a meter?
>
> Remember that the dish has a standing interference wave out in
front of
> the dish. Having the mic in that area will result in a big notch
in
> gain at lower frequencies.
>
> You need the mic diaphragm at the focal point of the dish
regardless of
> the mic design. And for a good parabolic that focal point will be
> inside the outer plane of the dish so as to avoid the interference
wave.
>
> Walt
>
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