Today's Message Index:
----------------------
1. 05:43 AM - Wanted - C90 (Pete)
2. 07:37 AM - Clipping the output of a XDP-4000X (Christof Gommers)
3. 10:16 AM - Re: Clipping the output of a XDP-4000X ()
4. 04:12 PM - Re: Clipping the output of a XDP-4000X (Randy Visentine)
Message 1
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--> XDP4000X-List message posted by: "Pete" <dabrow@orange.net>
Hi,
Anyone with a c90 for sale could you e-mail me with a price, picture and
any relevant information.
Thank you,
Pete
-----Original Message-----
From: owner-xdp4000x-list-server@matronics.com
[mailto:owner-xdp4000x-list-server@matronics.com] On Behalf Of Matt
Dralle
Subject: XDP4000X-List: 2003 List Fund Raiser - Please Support Your
Lists...
--> XDP4000X-List message posted by: Matt Dralle <dralle@matronics.com>
Dear Listers,
During November of each year, I have a voluntary Email List Fund Raiser
to
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Message 2
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| Subject: | Clipping the output of a XDP-4000X |
--> XDP4000X-List message posted by: Christof Gommers <christof.gommers@easynet.be>
Is it still possible to get the outputs clipping if you are using the
optical input on the XDP-4000X (for instance if you set the EQ at +12dB)
or is the internal power supply big enough so this can not occur? Just
wondering if it is possible or not.
Christof.
Message 3
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| Subject: | Re: Clipping the output of a XDP-4000X |
--> XDP4000X-List message posted by: <dbotel6500@rogers.com>
Hi there,
I do not think it is possible to clip the inputs, since
the optical ins/outs should be balanced...
I know that when I had the deck cranked at full volume, the audio did not distort
in terms of digital distortion. When one overloads typical digital devices,
you will get hard distortion that sounds horrible. (Such as recording analog
onto a standalone DAT/CD-R deck)
I never got it with this DSP
Daniel
>
> From: Christof Gommers <christof.gommers@easynet.be>
> Date: 2003/11/03 Mon AM 10:37:43 EST
> To: xdp4000x-list@matronics.com
> Subject: XDP4000X-List: Clipping the output of a XDP-4000X
>
>
1
Message 4
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| Subject: | Re: Clipping the output of a XDP-4000X |
--> XDP4000X-List message posted by: Randy Visentine <jvisentine@yahoo.com>
If you have a 16bit optical signal at 0dBfs on a CD,
and BOOST the EQ by 12dB, and then add more gain in
the output section, I am fairly confident you would
end up with more than 20 bits (the output converters
are 20 bit), causing digital distortion. I don't know
the formula for bit-to-dynamic range specs, but I
think going from 16 to 24 bit ends up with around 24
dB more headroom, so 20 bit would be more like 12dB
gain over a 16 bit signal. Anyway you look at it,
digital distortion is not pretty.
I don't believe the analog out could be clipped, as
the 20 bit D/A's have a finite maximum output level,
but I do believe you could run out of bits internally.
I have never had any issues with this, but I believe
that is why some Sony HUs have a selectable analog
output level - I think the 210EQ and XUD-50 are more
susceptible to this clipping with a hot analog input
with lots of internal digital gain - and that is why
the selectable output level is avalible. The Optical
outs are at a fixed level (the CD's linear
datastream).
Later,
Randy V.
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