Rode NTK gone south?

Archived from groups: rec.audio.pro (More info?)

Unusal mic behavior in my NYC project studio. 2 Year old NTK (a wonderful mic
for multiple uses btw) sounds like some phase distortion is happening as well
as an occasional high pitched annoying sound that stops when the mic is simply
touched.

Anyone ever experience such a thing? With ANY mic?
Thanks for any insight.

Dean in NYC

Archived from groups: rec.audio.pro (More info?)

Fingerz88D wrote:
> Unusal mic behavior in my NYC project studio. 2 Year old NTK (a wonderful
mic
> for multiple uses btw) sounds like some phase distortion is happening as
well
> as an occasional high pitched annoying sound that stops when the mic is
simply
> touched.
>
> Anyone ever experience such a thing? With ANY mic?
> Thanks for any insight.
>
> Dean in NYC

Yep. I have a Beyer MC740 with a loose headgrille that over a period of
time develops a peculiar distortion, and eventually builds up a kind of
white noise also. Touching (wriggling) the headgrille makes it go away. So
it may not be the tube or the capsule. Someone who actually passed EE might
be able to tell you why. Have you tried using a different cable?

Jeff Jasper
More talented than intelligent.

Archived from groups: rec.audio.pro (More info?)

"Ty Ford" <tyreeford@comcast.net> wrote in message
news:GNWdnZF78pZJsLjcRVn-sQ@comcast.com...
> On Thu, 19 Aug 2004 18:10:16 -0400, Jeff Jasper wrote
> (in article <cz9Vc.4469$Jn5.3580@fe1.texas.rr.com> ):
>
> >
> > Fingerz88D wrote:
> >> Unusal mic behavior in my NYC project studio. 2 Year old NTK (a
wonderful
> > mic
> >> for multiple uses btw) sounds like some phase distortion is happening
as
> > well
> >> as an occasional high pitched annoying sound that stops when the mic is
> > simply
> >> touched.
> >>
> >> Anyone ever experience such a thing? With ANY mic?
> >> Thanks for any insight.
> >>
> >> Dean in NYC
> >
> > Yep. I have a Beyer MC740 with a loose headgrille that over a period of
> > time develops a peculiar distortion, and eventually builds up a kind of
> > white noise also. Touching (wriggling) the headgrille makes it go away.
So
> > it may not be the tube or the capsule. Someone who actually passed EE
might
> > be able to tell you why. Have you tried using a different cable?
> >
> > Jeff Jasper
> > More talented than intelligent.
>
> Jeff,
>
> Good pointer. It may be that a loose headgrille has lost ground
conductivity
> with the grounded body. If the headgrille is not grounded, all hell breaks
> loose. Check for a loose connection.
>
> Regards,
>
> Ty Ford

FWIW I have to agree sounds like a shield/earth wire may have come adrift
somewhere .....

Archived from groups: rec.audio.pro (More info?)

Ty Ford wrote:

> It may be that a loose headgrille has lost ground conductivity with the
> grounded body. If the headgrille is not grounded, all hell breaks loose.

That is, I believe, precisely the appropriate technical term for what can
occur!

Sometimes people like to experiment by removing layers from multi-layer
screens on microphones--they hope to improve the "transparency" of the
microphone. Actually the way screens affect microphone response is not
necessarily the way we would inuitively assume, and one very real risk
is that the RF immunity of the microphone will be greatly compromised.

--best regards