Thanks. I remove the specificity until we can run
tests-- maybe in the $1000 contest. My most
stable/reliable reference is use the 722's gain
and then what I must do to match
listening/playback volume with the other recorder
at full gain. Sometimes the numbers do match what
I get listening (like with the MT's published
specs) and other times not. I should look in the
archive, did you come-up with a direct, sound
file dB comparison at max gain between your HD-2
and another known recorder? The Marantz
numbers/situation are not clear to me either. Rob
D.
At 8:45 AM +0000 1/4/07, Raimund Specht wrote:
>Hi Rob,
>
>On your interesting page=A0
>http://www.uwm.edu/~type/audio-reports/HiMD/index.htm
>you say that the HiMD recorders would provide 32 dB more gain than a
>Tascam HD-P2. However, I believe that the differences in the absolute
>input levels are much smaller (you might notice that I'm a fan of the
>HD-P2 ;-).
>
>The gain specifications (expressed in dB) provided by the
>manufacturers are almost irrelevant (TASCAM specifies a maximum gain
>of only 46.2 dB) because there is no absolute reference declared (the
>absolute reference would be the input level of the A/D converter chip).
>
>The only relevant figure that can be reliably compared across the
>various brands is the input level specified in dBu.
>
>Tascam specifies an input level (at Trim max) of -60dBu and John
>measured an input level of nearly -64 dBu for his RH1 (at High, +30).
>
>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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