Klas--
So the average user couldn't use mics like your
em-23's or popular ECM's with as-is? It seems
like you work-around is a custom ECM mic.
Is the phase interference in monitoring more evident when using high gain?
Very interested in your opinion of the pre noise and gain performance.
Rob D.
=3D =3D =3D =3D
At 2:06 PM +0200 8/19/06, Klas Strandberg wrote:
>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 FE=
T
>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 leas=
t
>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 pressure=
s
>>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 o=
nly.
>> >
>> >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
> =A0=A0=A0=A0=A0=A0=A0
>
>
>
>
>"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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