Gene to assist with your work here,
Translated to Sensitivities re 1V/PA.
Higher sensitivity increases the SNR
> Hand-held Recorder PIP Test:
>
> wo/mic w/mic
>
> Sony MZ NH900 2.3v 0.49v
Sensitivity less than -42dB re 1V/PA /8mV
> Marantz PMD-620 4.3v 2.4v
Close to -28 dB re 1V/PA or 39mV/PA
> Sony PCM-M10 3.0v 1.3v
Close to -32 dB, or 25mV/PA
> Olympus LS10 3.0v 2.1v
Close to -29 dB or 35mV/PA
All values +-3dB as per the capsule spec.
>
> wo/mic - Open circuit PIP voltage; No mic(s) plugged in
>
> w/mic - measured voltage at same points but with stereo(2) EM172 plugged
> in
>
>
> The PMD-620 and LS10 will probably work ok with the EM172s.
>
>
>
> What's more important is how they sound. I hope to record with the same
> recorders with the same stereo pair of EM172s this weekend. I will test with
> high mic gain in "quiet room" and then in an actual "nature" setting.
Considering the price and sensitivity its important to discuss the final mic
rather than capsules.
>
>
>
> Another test I plan is to compare the quality of recording with and without
> a battery box.
EMI/RF Screened or coated box works well.
>
>
>
> The FR2LE was not included since its not a hand-held PIP recorder. I am,
> however, trying out some EM172/173 48v phantom powered
10K resistors are your friend.
-Mike.
>
> mics. I'll post results later.
>
>
>
>
>
> Gene
>
>
>
>
>
> From:
> On Behalf Of Rob Danielson
> Sent: Thursday, October 07, 2010 9:23 AM
> To:
> Subject: RE: [Nature Recordists] Re: Beginner Equipment Question
>
>
>
>
>
> At 7:30 AM -0500 10/7/10, Gene Dorcas wrote:
> >
> >
> >I have a LS-10, FR2LE, PMD620 and a PCM-M10. I'll test them with a stereo
> >pair of EM172 today and let you know how each PIP holds up under the load
> of
> >a pair of EM172s. I don't have a Zoom H2 but Rob says he's used 172s with
> >his H2.
> >
> >Gene
>
> Great! As per Paul's question about phantom powering them-- other
> inquiring minds would like to know. Do let us know what phantom
> powering means you use with the Fostex. Some folks are getting more
> noise with phantom powering attempts. Maybe even a quiet room high
> gain test? Rob D.
>
> --
>
>
>
>
>
>
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