subject...
> --- On Fri, 8/13/10, Dan Dugan <> wrote:
>
> From: Dan Dugan <>
> Subject: Re: [Nature Recordists] Another neophyte flailing around on
> this subject...
> To:
> Date: Friday, August 13, 2010, 5:28 PM
>
>
> >> Lower-impedance mic inputs are easier to make quieter, but
> >> otherwise low input impedance is a bad thing, so there's a
> >> trade-off. You'd like a mic to be feeding an input that's
> >> many times its source impedance, so there's no loading
> >> effect and you get all the signal you can out of it.
> >> Unfortunately the actual source impedance of mics is often
> >> left out of the specifications so it's hard to gauge the
> >> relationship of a particular mic to a particular preamp's
> >> input.
> >
> >
> >
> > so my fav MKH416 with nominal impedance @ 25 should be a
> > good choice from this point, right ? ;-}
> >
>
>
> Yes, unless you're in telephony (miles of cable), the lower
> the source impedance the better.
>
>
>
> -Dan
The AEA TRP has really high impedance and according to the propaganda that =
is to
facilitate long cable runs.=A0 Not really field gear as it's A/C powered.=
=A0 And
lacks phantom power since it's The Ribbon Pre.=A0
The Art Tube MPA has variable impedance.=A0 And many say that it helps to d=
ial a
mic in.=A0 With some pretty major differences in the frequency response of =
certain
mics with the various impedance settings.=A0 As demonstrated by a few sampl=
es of
it in use.=A0 Also A/C powered so not a nature biased piece of gear.=A0 And=
tube
base, so a bit colored in it's output by default.
I tend to keep my recorder at the base of the mic stand so I'm not dealing =
with
long cable runs.=A0 At least not until I get a taller mic stand.=A0 Plus lo=
ng cables
are heavy when you're dealing with stereo pairs or decca tree (4+ mic)
configurations.=A0 I like having a little elevation as it dims the crickets=
and
other sounds in favor of a big picture sound image.=A0 Plus down low you ge=
t the
curious critters sniffing the mics.=A0 Maybe even attacking, or attempting =
to eat
them.
As far as the benefit to me, I guess it opens up a few mic options that mig=
ht
not do as well with the higher impedance.=A0 It might also extend battery l=
ife.=A0
But I doubt that it would be anything significant.=A0 And maybe not even by=
a
measurable amount.=A0 It could also open up the potential for interference.=
=A0
Although 2K is still pretty high impedance.=A0
Big picture wise it's not really that important IMO.=A0 But it can affect t=
he
sound of what you record.=A0 Even when the sound and the mics are for all i=
ntents
exactly the same.=A0 But they're still mics, that pick up sounds and the re=
corder
records it.=A0 So we're not talking huge differences.=A0 Although getting t=
he sound
you want or NOT is a pretty huge difference.
- James
=A0 =A0 =A0
------------------------------------
"While a picture is worth a thousand words, a
sound is worth a thousand pictures." R. Murray Schafer via Bernie Krause
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"While a picture is worth a thousand words, a
sound is worth a thousand pictures." R. Murray Schafer via Bernie Krause
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