Eric:
Thanks for the info. I had noticed the poor noise specs on the mike inputs.
Of course, I could use my SoundDevices MP-2, but that would be a hassle for
sure.
That said, in normal outdoor situations when doing parabolic recording, it
is extremely difficult to get species recordings with S/N much better than
50-55 db. Thus the internal preamps might do the trick just fine, as long a=
s
one doesn't record at low levels (the object being to get the background
ambience to be well above the noise floor of the preamps).
So maybe it would do just fine in most situations, and certainly as a backu=
p
recorder. However, if I were to do my Sennheiser/SASS sounscape recording,
I'd most certainly insert my MP-2 preamp and use line-in.
The Marantz is a really good deal, considering all it's features.
Lang
> Lang Elliott <> wrote:
> Also, does anyone on this list own the new Marantz PMD 670?
>
> Lang,
> I don't own one, but I had access to one for a few hours. I particularly=
had
> wanted to try out the microphone inputs. The published specifications st=
ate
> that the dynamic range for the mic inputs is 65 dB(A). That's pretty poo=
r,
> and I was hoping for better. So I tested it and found that for gain posi=
tions
> between 10 and 2 o'clock on the level control, the dynamic range was betw=
een
> 71 and 74 dB. That's still pretty poor.
>
> I conformed the frequency response on the mic input as being about 3/4 of=
a dB
> down at 20 Hz, and 1/2 dB down at 20 kHz. I should say thaqt all of thes=
e
> measurements were done using a 48 kHz sample rate and no compression.
>
> One could argue for the use of external mic preamps and/or external ADCs,=
but
> my reason for purchasing such a device would be to have all of the record=
ing
> kit in one box.
>
> AS for operational features, that all seemed just fine. I had the impres=
sion
> that it did have the problem of discharging the batteries while the devic=
e
> wasn't in use. It records like a recorder. That is, when you press the =
red
> button it starts to record. Downloading the files via the USB port went =
just
> fine. The PMD670 appears as an additional disk drive on the PC, and you =
can
> just drag and drop. The transfer speed isn't lightning fast, perhaps 10X=
the
> recording time. But that's way better than real-time transfer. And of
> course, if you use compression it would be much faster.
>
> I will send you the performance data if you are intersted.
>
> Eric
>
>
> [Non-text portions of this message have been removed]
>
>
>
> "Microphones are not ears,
> Loudspeakers are not birds,
> A listening room is not nature."
> Klas Strandberg
> Yahoo! Groups Links
>
>
>
>
>
>
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