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Jason
2004-01-05, 21:57
No, it's not a given that your squeeze is going to have the same output
volume level as your CD player.

The left/right outputs being reversed is of major concern though.

-----Original Message-----
From: discuss-bounces (AT) lists (DOT) slimdevices.com
[mailto:discuss-bounces (AT) lists (DOT) slimdevices.com] On Behalf Of Mark A. Aiken
Sent: Monday, January 05, 2004 9:21 PM
To: Slim Devices Discussion
Subject: [slim] I think I am hearing things

Hmm. Last night I was doing an A/B test between my CD player and my SB
to see if I could hear the difference between their DACs (couldn't really,
although I was hampered by the fact that even with the SB at full volume,
the CD player's signal was louder, so it wasn't a good A/B comparison). One
of the first things I noticed was that the SB's left/right output was the
opposite of my CD player. I used my computer to verify that my CD player was
correct, and flipped the RCA outputs on my SB. I figured I had gotten them
reversed when I plugged in the SB the first time.

I just double-checked, though, and if we're still going with the Red RCA
jack being the Right audio channel, then the analog outputs are indeed
reversed on the SB.

Can anyone else confirm?

Oh, and shouldn't the SB at full volume produce the same analog signal
strength as the line-out signal from my CD player, which was playing the
disc from which I ripped the audio stream that I was playing, unaltered,
though the SB?

Mark

----- Original Message -----
From: "Jeffrey Gordon" <jeff (AT) thetank (DOT) org>
To: "Slim Devices Discussion" <discuss (AT) lists (DOT) slimdevices.com>
Sent: Monday, January 05, 2004 6:26 PM
Subject: [slim] I think I am hearing things


> Well it appears to NOT just be the digital output, but also atleast the
> headphone output too. Have not tested the RCA analog outputs.
>
> On Monday 05 January 2004 21:13, Jason wrote:
> > Wow, so you have proven that the channels are reversed on the digital
> > output?
> >
> > Hope they fix that one quick.
> >
> > -----Original Message-----
> > From: discuss-bounces (AT) lists (DOT) slimdevices.com
> > [mailto:discuss-bounces (AT) lists (DOT) slimdevices.com] On Behalf Of Jeffrey
Gordon
> > Sent: Monday, January 05, 2004 6:50 PM
> > To: discuss (AT) lists (DOT) slimdevices.com
> > Subject: [slim] I think I am hearing things
> >
> > Ok I was wondering if things sounded reverse through the Squeezebox.
> > And today in my truck I was listening to a song that has a piano intro
> > on the left speaker as hear through my car speakers and home cd
> > player. Also when I play the flac encoded version of this song on my
> > computer it plays through the left speaker.
> >
> > However when I play the exact same FLAC file through the squeezebox
> > through the same reciever tested earlier the sound comes from the right
> > speaker. I have not identified other music yet with a distinct left or
> > right track to test with. Will look for some.
> >
> > My setup is as follows,
> > Slimserver nightly from 01-04-2004 with firmaware version v5
> >
> > Test the squeezebox with my reciever via toslink digital connection,
> > also tested it via headphones connected directly to the squeezebox with
> > the same results.
> >
> > Any ideas?
> >
> >
> >

Mark A. Aiken
2004-01-05, 22:44
I'm just curious about the volume level issue now -- I was imagining
that there's a spec somewhere (not that I know what it is) that says what a
"line-level" signal is, and that my CD player and my SB at full volume
(unattenuating) would produce the same voltages between 0 (or whatever
silence is) and Vmax, whatever that is according to the line-level spec, for
the same digital source material.

Is there something else at play that means, as you say, that I am silly
to expect this? I'm only bothering to talk about this since there is a
parallel thread about why someone else's SB is so "quiet" compared to their
other analog signal sources...

Mark

----- Original Message -----
From: "Jason" <jason (AT) pagefamily (DOT) net>
To: "'Slim Devices Discussion'" <discuss (AT) lists (DOT) slimdevices.com>
Sent: Monday, January 05, 2004 8:57 PM
Subject: [slim] I think I am hearing things


> No, it's not a given that your squeeze is going to have the same output
> volume level as your CD player.
>
> The left/right outputs being reversed is of major concern though.
>
> -----Original Message-----
> From: discuss-bounces (AT) lists (DOT) slimdevices.com
> [mailto:discuss-bounces (AT) lists (DOT) slimdevices.com] On Behalf Of Mark A. Aiken
> Sent: Monday, January 05, 2004 9:21 PM
> To: Slim Devices Discussion
> Subject: [slim] I think I am hearing things
>
> Hmm. Last night I was doing an A/B test between my CD player and my SB
> to see if I could hear the difference between their DACs (couldn't really,
> although I was hampered by the fact that even with the SB at full volume,
> the CD player's signal was louder, so it wasn't a good A/B comparison).
One
> of the first things I noticed was that the SB's left/right output was the
> opposite of my CD player. I used my computer to verify that my CD player
was
> correct, and flipped the RCA outputs on my SB. I figured I had gotten them
> reversed when I plugged in the SB the first time.
>
> I just double-checked, though, and if we're still going with the Red
RCA
> jack being the Right audio channel, then the analog outputs are indeed
> reversed on the SB.
>
> Can anyone else confirm?
>
> Oh, and shouldn't the SB at full volume produce the same analog signal
> strength as the line-out signal from my CD player, which was playing the
> disc from which I ripped the audio stream that I was playing, unaltered,
> though the SB?
>
> Mark
>
> ----- Original Message -----
> From: "Jeffrey Gordon" <jeff (AT) thetank (DOT) org>
> To: "Slim Devices Discussion" <discuss (AT) lists (DOT) slimdevices.com>
> Sent: Monday, January 05, 2004 6:26 PM
> Subject: [slim] I think I am hearing things
>
>
> > Well it appears to NOT just be the digital output, but also atleast the
> > headphone output too. Have not tested the RCA analog outputs.
> >
> > On Monday 05 January 2004 21:13, Jason wrote:
> > > Wow, so you have proven that the channels are reversed on the digital
> > > output?
> > >
> > > Hope they fix that one quick.
> > >
> > > -----Original Message-----
> > > From: discuss-bounces (AT) lists (DOT) slimdevices.com
> > > [mailto:discuss-bounces (AT) lists (DOT) slimdevices.com] On Behalf Of Jeffrey
> Gordon
> > > Sent: Monday, January 05, 2004 6:50 PM
> > > To: discuss (AT) lists (DOT) slimdevices.com
> > > Subject: [slim] I think I am hearing things
> > >
> > > Ok I was wondering if things sounded reverse through the Squeezebox.
> > > And today in my truck I was listening to a song that has a piano intro
> > > on the left speaker as hear through my car speakers and home cd
> > > player. Also when I play the flac encoded version of this song on my
> > > computer it plays through the left speaker.
> > >
> > > However when I play the exact same FLAC file through the squeezebox
> > > through the same reciever tested earlier the sound comes from the
right
> > > speaker. I have not identified other music yet with a distinct left
or
> > > right track to test with. Will look for some.
> > >
> > > My setup is as follows,
> > > Slimserver nightly from 01-04-2004 with firmaware version v5
> > >
> > > Test the squeezebox with my reciever via toslink digital connection,
> > > also tested it via headphones connected directly to the squeezebox
with
> > > the same results.
> > >
> > > Any ideas?
> > >
> > >
> > >

kdf
2004-01-05, 23:23
Line levels vary for analog inputs. For this very reason, there is even a
warning in the manual for my Yamaha amplifier against setting the volume over
50%. Doing so might have unexpected overdrives at the output when switching the
input source. differences in output levels for different analog inputs isn't so
much of a worry. An output level lacking in significant volume even when the
amplifier is set to full volume, is a concern.

Differring outputs based on digital inputs, I can't speak to. My amp only
allows one digital audio in.

-kdf



Quoting "Mark A. Aiken" <mark_aiken (AT) hotmail (DOT) com>:

> I'm just curious about the volume level issue now -- I was imagining
> that there's a spec somewhere (not that I know what it is) that says what a
> "line-level" signal is, and that my CD player and my SB at full volume
> (unattenuating) would produce the same voltages between 0 (or whatever
> silence is) and Vmax, whatever that is according to the line-level spec, for
> the same digital source material.
>
> Is there something else at play that means, as you say, that I am silly
> to expect this? I'm only bothering to talk about this since there is a
> parallel thread about why someone else's SB is so "quiet" compared to their
> other analog signal sources...
>
> Mark
>

T
2004-01-06, 00:09
> I'm just curious about the volume level issue now -- I was imagining
> that there's a spec somewhere (not that I know what it is) that says what
a
> "line-level" signal is, and that my CD player and my SB at full volume
> (unattenuating) would produce the same voltages between 0 (or whatever
> silence is) and Vmax, whatever that is according to the line-level spec,
for
> the same digital source material.

There is, I'll dig it up at work tomorrow.

However, not everyone adheres to it.

Tom