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Re: Edirol R-09

Subject: Re: Edirol R-09
From: "Klas Strandberg" klasstrandberg
Date: Sat Aug 19, 2006 5:11 am (PDT)
Never a dull moment!

At four this morning I was near giving up with the Edirol 09 Plug In Power!
I decided to make another attempt with a 20 year old, very conventional FET=

transistor impedance converter / amp.
It worked!

The Edirol 09 PIP works okay if you draw very little current from it.
Preliminary conclusion: When the mic is connected, you must have a at least=

2,4 v at the input / channel + (of course) - a low noise microphone.

It's similar to the problem with the Sony High MD's: But here, the problem=

was that the PIP voltage went down below 0,6v when you connected a
microphone with a modern FET-IC, like 2SK1227.
I find it somewhat strange  that you have to go 20 years back in time to
meet the modern mic input requirements and make them work!!!

But never a dull moment.

The "harmonizer" effect is a anti-phase mix which take place only when
monitoring. When monitoring a sine wave for example, one channel only, you=

can vaguely hear the tone in the other channel too, but phase distorted.
The recording is okay.

Klas.

  et At 20:47 2006-08-18, you wrote:
>You are priceless, William, lots of hints! Thanks.
>My only comment is that I tried the low setting once, but then I got too
>low input.
>Remember: I try it for naturesound recording only, and the sound pressures
>present.
>
>Klas.
>
>At 18:31 2006-08-18, you wrote:
> >There's an update of firmware from 1.02 to 1.03 on the Edirol web
> >site.  The link is:  http://tinyurl.com/kj5ad
> >
> >Leonard at Sonic Studios is preparing a review of the R-09.  He
> >describes the R-09's preamps as "adequately quiet." You can read his
> >work in progress at www.sonicstudios.com/r-09revw.htm
> >
> >As Rob D. suggests, the Taperssection.com site has a wealth of
> >information.  The "Recording Gear" section has more than 600 posts
> >about the R-09.  In general, owners are pleased with the small size,
> >easy-to-use controls, low price, and lack of software bugs in the
> >R-09.  Recordings of loud music concerts (the primary interest of the
> >Tapers Section members) sound good.
> >
> >The following information was gleaned from Tapers Section sources.
> >
> >1. Plug-in power is supposed to be 3.3v, but one owner measured only
> >2.5v.  Perhaps this explains the poor performance of the Telinga mics.
> >
> >2. If you set the recording gain below 8 you are attenuating the
> >signal, all the way down to 0 which is 100% attenuated, no sound.
> >Any setting above 8 is adding gain. A setting above 25 adds a lot of
> >noise.
> >
> >3. Low Gain Mic-In and Line-In are almost the same noise and gain, the
> >difference is you can get plug-in power on the mic-in.
> >
> >4. Running the mic gain switch on high increases the noise a lot,
> >particularly if you use the internal mics.
> >
> >To achieve less noisy results, try using mic low or line in with "hot"
> >(high output) mics. One user reports the Audio Technica 853 works well
> >on line or mic low settings, with noise below -100db across the
> >spectrum at 25 gain.
> >
> >5. When using line or mic low the last steps from 25 to 30 is where
> >you get the most added noise, so run at 25 or lower, line or mic low onl=
y.
> >
> >6. The R-09 uses standard SD flash memory cards (not the newer SDHC).
> >The largest SD card available today is 4GB.  The R-09 can't format the
> >4GB card, but if the card is formatted in a computer then the R-09 can
> >use its full capacity.
> >
> >Owners report the Transcend 4GB and Adata 4GB SD cards work properly.
> >  The Patriot and PQI 4GB cards did not work after formatting in a PC.
> >(Incidentally, 4GB cards like the Transcend cost less than $60 these
> >days.)
> >
> >Recording two channels at 24/48 to a 4GB card =3D 4 hours of tracks.
> >Recording at 16/48 =3D 6 hours. The R-09 can capture this as a single
> >continuous recording if you need to. (Note, however, that many audio
> >editing programs have a file size limit of 2GB.)
> >
> >7. The R-09 is powered by two AA batteries.  AA Alkalines last about 6
> >hours, rechargeables 7 to 8 hours.  One owner reports 9 hours record
> >time using Powerex 2500 mAh cells.  Lithium AAs will last longer
> >still, but the R-09's battery meter doesn't report the battery power
> >remaining properly with lithiums.
> >
> >8. The R-09 can be attached via USB cable to your PC or Mac, and files
> >transferred without special software.  File transfer speed is very
> >slow this way. Remove the SD card from the R-09 and plug it into a USB
> >card reader for much faster file transfers.
> >
> >--oryoki
> >
> >
> >
> >
> >
> >
> >
> >
> >"Microphones are not ears,
> >Loudspeakers are not birds,
> >A listening room is not nature."
> >Klas Strandberg
> >Yahoo! Groups Links
> >
> >
> >
> >
>
>Telinga Microphones, Botarbo,
>S-748 96 Tobo, Sweden.
>Phone & fax int + 295 310 01
>email: 
>website: www.telinga.com
>
>
>
>
>
>"Microphones are not ears,
>Loudspeakers are not birds,
>A listening room is not nature."
>Klas Strandberg
>Yahoo! Groups Links
>
>
>
>

Telinga Microphones, Botarbo,
S-748 96 Tobo, Sweden.
Phone & fax int + 295 310 01
email: 
website: www.telinga.com







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