Sorry Bruce. I thought you and Curt had NH800's.
~60dB dynamic seems high for "Hi Sens" to me as well. Since the
discovery on this list that the "Low Sens" position/circuit greatly
reduces over-mod (as with electret mics and close voice micing etc.),
I've used the Low Sens setting when circumstances suggest a record
gain of "13" or lower in the Hi Sens setting. This has greatly
reduced fears of dynamic range limitations when I must capture loud
sounds. I've not really done a serious test, but "Low Sens" also
seems to help with the WL183 "bottoming out" on loud, low Hz signals.
This could be compatible with Curt's theory that the mic pre circuit
is "faulty" -- but--- possibly only when the recorder is in the less
appropriate, "Hi Sens" setting. The abilities of the AK5356VN-L
continue to impress me.
Someone sent me this link with NH700's going for $160 in the US:
http://www.shewasinc.com/Sony%20MZ-N910.html Rob D.
At 11:03 AM -0700 1/3/07, Bruce Wilson wrote:
>The reported 60 dB dynamic range for a mini-disc set to high sensitivity
>seems too high from my experience. I was thinking it was around 45 dB,
>limited by how loud a signal can be before the mic amp maxes out and
>distorts.
>
>Anyone know how this is measured? It needs to be measured from actual inpu=
t
>levels, not by assuming a line input standard level (1 v) and measuring ho=
w
>far the noise is below that figure.
>
>I will point out that my experience with mic input levels is confounded by
>the relatively weak plug-in power of the recorder, and it might be that th=
e
>mics distort because of the PIP current drain rather than the preamp
>flat-topping the signal. Also, I only use the 700 model, not the RH1, but =
I
>think the inputs are identical.
>
>Bruce Wilson
>http://science.uvsc.edu/wilson
>-----Original Message-----
>At 9:15 AM +0000 1/3/07, Raimund Specht wrote:
>>> In my experience with recorders, this is very
>>> commendable performance for a low cost unit.
>>>
>>...
>>
>>> In your ratings of the performance of your Hi-MD recorder,
>> > http://beale.best.vwh.net/measure/audio/MZ-RH1_Mic_30_150Z.htm to
>>> which audio recorders are you making this comparison or "poor" and
>>> "average?"
>>
>>I guess that these poor noise level and dynamic range ratings have
>>been created automatically by the RightMark Audio Analyzer software.
>>It seems that this software implies that one measures the LINE-IN
>>performance only. However, a microphone input with a higher gain will
>>always provide smaller dynamic range figures than a line input. So,
>>for a high-gain microphone input, the dynamic range of 60.8 dBA would
>>be quite good and we should just ignore the stupid "poor" and
>>"average" attributes.
>>
>>Regards,
>>Raimund
>>
>
>
>
>
>
>"Microphones are not ears,
>Loudspeakers are not birds,
>A listening room is not nature."
>Klas Strandberg
>Yahoo! Groups Links
>
>
>
--
Rob Danielson
Peck School of the Arts
University of Wisconsin-Milwaukee
http://www.uwm.edu/~type/audio-art-tech-gallery/
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