Rode NTK Interference problem

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

I noticed today that my Rode NTK is exhibiting a strange crackling
(not your normal audio glitching). It kinda sounds like a bowl of rice
krispies (if you know what I mean). I think it's just suddenly got
worse (I did notice it around 6 months ago, but it then dissapeared) -
it's now come back with avengance, and other than the microphone being
buggered, does anyone have an ideas what it might be? It's probably
been used a total of 30-40 times. I've tried leads, amps etc.

Here's a recording of the noise (this is a recording of my studio
'silence' - I then normalised it, so it isn't actually this loud).

http://www.theshiers.plus.com/crack.mp3

Any ideas appreciated

Owen

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

LOL! Thanks for the feedback, I forgot I'd left the stuff uploaded...I
should really take them down, as I've not copyrighted them yet!

I don't think my FTP program uploaded the file for some reason, I've
done it again and it works. Sorry about that. By the way, could the
problem be the valve? How often do they need replacing? If at all?

Cheers

Owen

"John L Rice" <Drummer@ImJohn.com> wrote in message news:<116icm3mfsdvj4e@corp.supernews.com>...
> Hi Owen,
>
> The link to your MP3 doesn't seem to work. I went to the root of your
> website just to see if it was mistyped but I didn't see it there either.
>
> I hope you don't mind but while I was there I listened to the three MP3's
> that are there of your music. I really enjoyed all three pieces! Especially
> the guitar playing and writing/arrangements. Cool stuff!
>
> --
> John L Rice
> Drummer@ImJohn.com
>
> "Owen Shiers" <owenoftheshire@gmail.com> wrote in message
> news:4ce48aaf.0504220847.4a70edbd@posting.google.com...
> >I noticed today that my Rode NTK is exhibiting a strange crackling
> > (not your normal audio glitching). It kinda sounds like a bowl of rice
> > krispies (if you know what I mean). I think it's just suddenly got
> > worse (I did notice it around 6 months ago, but it then dissapeared) -
> > it's now come back with avengance, and other than the microphone being
> > buggered, does anyone have an ideas what it might be? It's probably
> > been used a total of 30-40 times. I've tried leads, amps etc.
> >
> > Here's a recording of the noise (this is a recording of my studio
> > 'silence' - I then normalised it, so it isn't actually this loud).
> >
> > http://www.theshiers.plus.com/crack.mp3
> >
> > Any ideas appreciated
> >
> > Owen

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

"Owen Shiers" <owenoftheshire@gmail.com> wrote in message
news:4ce48aaf.0504230044.30c66c1e@posting.google.com...
> LOL! Thanks for the feedback, I forgot I'd left the stuff uploaded...I
> should really take them down, as I've not copyrighted them yet!
>
> I don't think my FTP program uploaded the file for some reason, I've
> done it again and it works. Sorry about that. By the way, could the
> problem be the valve? How often do they need replacing? If at all?
>
> Cheers
>
> Owen
>
> "John L Rice" <Drummer@ImJohn.com> wrote in message
> news:<116icm3mfsdvj4e@corp.supernews.com>...
>> Hi Owen,
>>
>> The link to your MP3 doesn't seem to work. I went to the root of your
>> website just to see if it was mistyped but I didn't see it there either.
>>
>> I hope you don't mind but while I was there I listened to the three MP3's
>> that are there of your music. I really enjoyed all three pieces!
>> Especially
>> the guitar playing and writing/arrangements. Cool stuff!
>>
>> --
>> John L Rice
>> Drummer@ImJohn.com
>>
>> "Owen Shiers" <owenoftheshire@gmail.com> wrote in message
>> news:4ce48aaf.0504220847.4a70edbd@posting.google.com...
>> >I noticed today that my Rode NTK is exhibiting a strange crackling
>> > (not your normal audio glitching). It kinda sounds like a bowl of rice
>> > krispies (if you know what I mean). I think it's just suddenly got
>> > worse (I did notice it around 6 months ago, but it then dissapeared) -
>> > it's now come back with avengance, and other than the microphone being
>> > buggered, does anyone have an ideas what it might be? It's probably
>> > been used a total of 30-40 times. I've tried leads, amps etc.
>> >
>> > Here's a recording of the noise (this is a recording of my studio
>> > 'silence' - I then normalised it, so it isn't actually this loud).
>> >
>> > http://www.theshiers.plus.com/crack.mp3
>> >
>> > Any ideas appreciated
>> >
>> > Owen

I just listened to the sample.

This is a guess but it sounds like either moisture/contaminants on a
connection or circuit board, a bad solder joint or a transistor or other
component going bad. I don't work with tubes enough to know but it could be
the tube going bad I guess.

--
John L Rice
Drummer@ImJohn.com

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

It's most likely the bi-polar transistor beside the tube. This has happened
to mine in the past..Easy fix..

J

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

"Jack G." <jackNOsPaM!@bitstream.net> wrote in message news:<XaOdnWtHvNd30vHfRVn-tw@centurytel.net>...
> It's most likely the bi-polar transistor beside the tube. This has happened
> to mine in the past..Easy fix..
>
> J

Cheers for the replies. Could you please elaborate more on your last
post? Is the tube inside the mic or the PSU?

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

"John L Rice" <Drummer@ImJohn.com> wrote in message
news:116qjb8j18ofibe@corp.supernews.com...
>
> "Owen Shiers" <owenoftheshire@gmail.com> wrote in message
> news:4ce48aaf.0504251048.1b5993f2@posting.google.com...
>> "Jack G." <jackNOsPaM!@bitstream.net> wrote in message
>> news:<XaOdnWtHvNd30vHfRVn-tw@centurytel.net>...
>>> It's most likely the bi-polar transistor beside the tube. This has
>>> happened
>>> to mine in the past..Easy fix..
>>>
>>> J
>>
>> Cheers for the replies. Could you please elaborate more on your last
>> post? Is the tube inside the mic or the PSU?
>
> The tube should be inside the mic ( it is on my NTV )
\

.... but I would suggest addressing the other possibiliyies first !

geoff

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

Well, I've done some more tests and I don't think it's a bad contact. I
left it for two weeks without touching the microphone and tried it
again yesterday with a combination of leads. At first it seemed the
problem had dissapeared, but just to be sure I left it on for a few
hours. Needless to so I came back later on and it had started
re-appearing - albeit not as bad as previously. Could this be moisture?


Owen