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Edirol UA-1A on an iBook

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Ed Straker

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Mar 25, 2003, 9:19:12 PM3/25/03
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I'm having trouble using a new Edirol UA-1A USB/audio interface with my
iBook, which is running OS X 10.2.4. There seems to be no way to set the
input level. A line-level input clips. It's not by much, a couple of dB,
but any clipping is unacceptable, of course. The input-level control in
Peak LE is disabled, and the Sound preference pane reports that there
are "no settings for the selected device." Can anyone give me a tip? I
suppose I could build a volume control, but I shouldn't have to, should
I?

FWIW, I was using an iMic before, but using it with the iBook leaves a
"computer hash" noise at about -45 dB. My G4 is quieter. The noise is
down at about -60 dB, which is just on the edge of acceptability for my
non-pro use. The Edirol seems much more quiet, but, that ain't worth
much if there's clipping at normal levels.

TIA,
Ed

Paul van der Heu

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Mar 26, 2003, 4:54:19 AM3/26/03
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Ed Straker <str...@shado.com> wrote :

> I'm having trouble using a new Edirol UA-1A USB/audio interface with my
> iBook, which is running OS X 10.2.4. There seems to be no way to set the
> input level. A line-level input clips.

> The Edirol seems much more quiet, but, that ain't worth much if there's
>clipping at normal levels.

The UA-1A is a -10dB level device. so if you feed it a (pro) +4dB level
input it will clip quite easily..

--
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check alvast het forum http://forum.geluidstechniek.nl/

matt neuburg

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Mar 26, 2003, 11:17:06 AM3/26/03
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In <straker-433544...@syrcnyrdrs-03-ge0.nyroc.rr.com> Ed
Straker wrote:
> I'm having trouble using a new Edirol UA-1A USB/audio interface with
> my iBook, which is running OS X 10.2.4. There seems to be no way to
> set the input level. A line-level input clips. It's not by much, a
> couple of dB, but any clipping is unacceptable, of course. The input-
> level control in Peak LE is disabled, and the Sound preference pane
> reports that there are "no settings for the selected device." Can
> anyone give me a tip? I suppose I could build a volume control, but I
> shouldn't have to, should I?

I don't entirely understand how one is supposed to use a device without
a volume control. The only thing I can recommend is that you do your
recording with software where the input-level control is *not* disabled.
For example, Amadeus, Sound Studio, or Montage. m.

--
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REALbasic: The Definitive Guide! 2nd edition!
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Ed Straker

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Mar 27, 2003, 7:38:24 PM3/27/03
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As someone suggested, I tried recording with other apps. No luck.

* Amadeus II 3.5.4: Clips. Input-level control is grayed out.

* Audio Recorder 1.3: Clips. No input-level control.

* AudioX 2.1.0: Clips. No input-level control.

* Coaster 1.1.3 (OS 9): No input seen.

I submitted a question to Edirol via their web site and received a
prompt reply. They confirmed that it's designed for a -10 dB input. They
stated unequivocally that the UA-1A input level "is not adjustable via
software or hardware control." Bummer. Their explanation for the
clipping was that my output is "hot." It's a tape output from an NAD
pre-amp, which I would expect to have a standard -10dB signal, but I
suppose anything's possible.

I put an equalizer in the line, which allowed me to clumsily reduce the
level, and the playback revealed clicks, which were revealed to be
discontinuities in the waveform. Fault of the Edirol or the iBook? Moot
point. I'm returning it.

This product may be useful if you have a mixer with variable output, but
if you expect to use this to record directly from your stereo, then
you're rolling the dice.

The search continues...

In article
<straker-433544...@syrcnyrdrs-03-ge0.nyroc.rr.com>,

matt neuburg

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Mar 27, 2003, 9:55:24 PM3/27/03
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In <straker-5BC6E6...@syrcnyrdrs-01-ge0.nyroc.rr.com> Ed
Straker wrote:
> As someone suggested, I tried recording with other apps. No luck.
> I submitted a question to Edirol via their web site and received a
> prompt reply. They confirmed that it's designed for a -10 dB input.
> They stated unequivocally that the UA-1A input level "is not
> adjustable via software or hardware control." Bummer. Their
> explanation for the clipping was that my output is "hot." It's a tape
> output from an NAD pre-amp, which I would expect to have a standard -
> 10dB signal, but I suppose anything's possible.
>
> I put an equalizer in the line, which allowed me to clumsily reduce
> the level, and the playback revealed clicks, which were revealed to
> be discontinuities in the waveform. Fault of the Edirol or the iBook?
> Moot point. I'm returning it.

Sorry the other apps didn't work either. I use an Edirol UA-3 (
predecessor to the -3D) and it's been great. This has input/output
volume controls.

I had the same problem with clicking when I tried the iMic. But I've
never had any such problem with the UA-3. m.

John Carville

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Mar 28, 2003, 6:12:55 AM3/28/03
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Ed Straker! My man! Where ya been, dude? I've been looking for you
since childhood. Oh, those early Saturday mornings before the TV
screen.... what memories! Since then, I've snooped around most of the
disused factories and warehouses I could find, but no trace of Shado.
Darn, I guess I just should have done a search on the net. There you
were all the time at www.shado.com, disguised as a holster and
concealment device supplier. Nice touch!

I was thinking about getting a UA1A to run on my gf's laptop, but I've
heard that they don't function too well. I see that you're having
problems too.... Hmmm.

JC

(wondering whether he should take another look at the news offices at
Sky One - perhaps there's a secret underwater vehicle located nearby.
Oh dear, suddenly those fantasies about girls in silver suits and
purple anti-static wigs come flooding back....)

Ed Straker

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Mar 28, 2003, 8:21:24 PM3/28/03
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Greetings, my friend. Yes, the film production business was becoming too
dangerous. Our security was being threatened. First that pesky Mary
Hart. Then Bob Goen. And don't even get me started about E! The quality
leather goods business is a fine cover, but I had to trade in my Super
Coupe for a 1977 Oldsmobile Eighty Eight to better fit in with the local
yokels here in Florida. The struggle against the aliens goes on, but I'm
afraid they've been able to infiltrate the upper echelons of the current
American administration. (You didn't really think W was human, did you?)
Keep the faith, baby.

Ed

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