Re: [SlimDevices: Audiophiles] Tweaking - Bypass internal SB DAC and SPidf Question

2011-03-31 Thread soundcheck

If you apply my Toolbox  to the Touch, you can turn the analog output
off from the SW side.

At least the bits are no longer routed in parallel to all outputs in
that case.


Cheers


-- 
soundcheck

'soundcheck's Touch Toolbox 2.0'
(http://soundcheck-audio.blogspot.com/2011/01/soundchecks-squeezebox-touch-toolbox-20.html)
|| 'soundcheck's Touch Toolbox - Beta Blog'
(http://soundcheck-audio.blogspot.com/2011/01/soundchecks-tt-beta-blog.html)

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[SlimDevices: Audiophiles] Tweaking - Bypass internal SB DAC and SPidf Question

2011-03-28 Thread turbot fiend

Some dumb questions that search or RTFM not made obvious.

Have RTFM'd but can't find out how the internal DAC in SB Touch is
automatically disabled when one attaches an external DAC.  Is it a
by-default setting when spidf out is connected (coax or opt.)?  I want
to be sure that it is the external DAC that i am listening to by
choice.

Likewuse Are there any settings on Squeezeserver that I should adjust
in order to optimise - I tend to leave it alone and remain on most
stable version.

Furthermore, if one connects both coax and optical to a DAC
concurrently, which would default?  I have tried to do some listening
tests to hear if my ears can discern spidf differences, but have failed
to do so so.

My system:

Tranquil Harmony T7routerDevolo N extender wireless to SB Touch
optical to Cyrus PreXP D Qx Dac chip Dynaudio Focus 110 Actives
Velodyne SPLr 800 ultra sub

I am overall very happy with system - but dont want to miss any
tricks.

thanks for reading.


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Re: [SlimDevices: Audiophiles] Tweaking - Bypass internal SB DAC and SPidf Question

2011-03-28 Thread cliveb

turbot fiend;621386 Wrote: 
 Have RTFM'd but can't find out how the internal DAC in SB Touch is
 automatically disabled when one attaches an external DAC.
It isn't disabled. The internal DAC continues to operate in parallel
with the SPDIF output, regardless of whether you connect an external
DAC.

turbot fiend;621386 Wrote: 
 I want to be sure that it is the external DAC that i am listening to by
 choice.
Whichever DAC's analogue outputs you connect to your amplifier is the
one you'll be listening to. If you connect both the SB's analogue
outputs and the external DAC's analogue outputs (ie. to two different
inputs on the amp), then the amp's input selector will determine which
DAC you hear.

turbot fiend;621386 Wrote: 
 Likewuse Are there any settings on Squeezeserver that I should adjust in
 order to optimise - I tend to leave it alone and remain on most stable
 version.
If you want to avoid using the SB's volume control (and use only your
amp's volume control), then some people recommend setting Squeezeserver
to have fixed volume output. But it isn't essential - you can just leave
the SB's volume at max and it amounts to the same thing.

turbot fiend;621386 Wrote: 
 Furthermore, if one connects both coax and optical to a DAC
 concurrently, which would default?
That would depend on the DAC. Some DACs might have a default priority;
others might require you to manually select the input. The SB doesn't
care - it sends the same SPDIF signal on both COAX and optical
outputs.

turbot fiend;621386 Wrote: 
 I have tried to do some listening tests to hear if my ears can discern
 spidf differences, but have failed to do so so.
Comparing COAX and optical to external DAC? No surprise you hear no
difference.

Comparing SB analogue output and external DAC? Whether you hear a
difference depends on the relative performance of the SB and external
DACs. Maybe they happen to sound pretty much the same - entirely
plausible.


-- 
cliveb

Transporter - ATC SCM100A

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Re: [SlimDevices: Audiophiles] Tweaking - Bypass internal SB DAC and SPidf Question

2011-03-28 Thread turbot fiend

Thanks for that Clive.

Just for clarity, if the internal Touch DAC continues to operate, is
it's digital output via spidf, then subsequently clocked/reclocked and
D/A converted again at the external DAC stage?


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Re: [SlimDevices: Audiophiles] Tweaking - Bypass internal SB DAC and SPidf Question

2011-03-28 Thread garym

turbot fiend;621403 Wrote: 
 Thanks for that Clive.
 
 Just for clarity, if the internal Touch DAC continues to operate, is
 it's digital output via spidf, then subsequently clocked/reclocked and
 D/A converted again at the external DAC stage?

No, you are still thinking that somehow your digital out via S/PDIF or
optical to your external DAC is running through the internal DAC. IT IS
NOT. The internal DAC is always on, but the path to your external DAC is
NOT running through the internal DAC.


-- 
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