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Re: Fostex FR-2LE vs SD 722 (was 722 vs MixPre)

Subject: Re: Fostex FR-2LE vs SD 722 (was 722 vs MixPre)
From: "Raimund Specht" animalsounds
Date: Mon Mar 23, 2009 1:55 am ((PDT))
--- In  Rob Danielson <> wrote:

> When I first listened to Curt's test with my aging ears on speakers,
> I didn't notice any difference between the two recorders. When I made
> a sonogram the next morning to see if I had missed anything, I was
> shocked.
>
> To better reveal the performance differences,  I edited the ticks so
> the edit point falls in the middle of the room presence between ticks
> 4 and 5 (rather than immediately before 5). The additional clarity in
> the lower mid-range and reduction in hiss in the SD 722 is pretty
> apparent. The uniform noise added above 9K Hz by the Fostex is
> definitely worth further exploration. Curt is conducting a similar
> test again; perhaps others with FR-2LE's might want to see if they
> can duplicate these results.
>
> 1.8mb QuickTime movie plays in a loop:
> http://tinyurl.com/c8lvty
> or
> http://www.uwm.edu/~type/audio-art-tech-gallery/pages/Olson-fr2le-sd722_S=
or_Lrg-present.html
>
> Rob D.


Hi Rob,

Yes, I also noticed the increased level of noise above 9 kHz in Curt's test=
 file, certainly on the left channel. It seems to be some kind of a noisy o=
scillation (there is soft peak at 16 kHz).

I have never seen such an effect on my own FR-2LE. It might be that it is j=
ust a noise signal originating from another electronic device that was pres=
ent in Curt's test room (which however is unlikely) or that it is perhaps a=
 problem of the (individual?) FR-2LE in conjunction with the AT3032. I have=
 tested my own unit only with Sennheiser K6/MExx and MKH60 microphones (and=
 150 ohm termination resistors).

Regards,
Raimund








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