Hi Arnthor,
It would be nice to hear that soundfile if you can share it.
The two NT1A mics I use sometimes have issues that seem to correlate to a c=
ooling ambient temperature crossing dew point - condensation at diaphragm I=
guess.
John Hartog
rockscallop.org
--- In Arn=FE=F3r Helgason <arnthor.helga=
> wrote:
>
> Der listers.
>
> I am a new member to this list. I have run a blogpage
> http://hljod.blog.is =96 Icelandic Soundblog. There are recordings of var=
ious
> natural sounds. They are devided into several categories. See:
> fuglar (birds), vatni=F0 (water), sj=F3rinn (the sea) umhverfishlj=F3=F0 =
(sounds of
> the environment) and recently vindurinn (the wind). More categories will =
be
> set up with English names.
>
> For some time I have used R=F8de microphones for my recordings: NT-2A +NT=
-55
> in a MS-setup and NT-1A in NOS or AB setup. The results have been sometim=
es
> outstanding.
> Recently the following problem occurred:
>
> Last week I was in a summerhouse and left the microphones outside for who=
le
> night on two occasions. I noticed that as the temperature lowered and th=
e
> dew fell on, something happened. A strange noise appeared. The first nigh=
t I
> had the microphones NT-2A and NT-55 in an MS-setup. Then the NT-2A was
> affected and the second night both the NT-1A seemed to fail. Strangely th=
e
> microphones seemed to start working as the sun started to shine and warm =
up
> the microphones which were covered with a dead cat. The temperature may h=
ave
> been around 4-5=A8=B0 C and the dew had fallen. The microphones seem to h=
ave
> started to fail after around 90 minutes.
> I have created a soundfile with the noise from one of the NT-1A.
>
> Has anyone on this list had any experience with this? My friend, Magn=FA=
s
> Bergsson, thinks something might be wrong with the cables I used. Some te=
st
> shows that they seem to be in order.
>
> The head of the Technical Department of The Icelandic State Radio, Georg
> Magn=FAsson, thought the failure might be caused by the moisture and the=
low
> temperature.
>
> This makes me to think what to do. I have Senheiser ME-62 and 64 which I
> have sometimes used in very harsh conditions, but I think they are a litt=
le
> too noisy. Until 1 year ago I used a battery pack together with the 62 an=
d
> 64, but now I have invested in two packs without batteries and the
> microphones semm not as noisy as usually. They can however never be compa=
red
> with the NT-2A and NT-1A.
>
> Natural sounds, as of birds, here in Iceland are very low and sometimes
> distant.
>
> With very best regards,
> Arnthor Helgason
>
> Arnthor Helgason
> http://hljod.blog.is
> Email:
>
>
>
>
>
>
>
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