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Old 30th May 2008, 09:06 PM   #1
101dm is offline 101dm  Germany
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Default CD 723 Philips ...

Hello,
I am reading in this forum for a while - especially the "digital" and "chipamp"-section.
I also read about tweaking the Philips CD 723 - I just want to use it as a Transport for my NOS-DAC (from Scott Nixon).
So far so good...
...but the forum-search was absolutely confusing me:

some say: "...SPDIF-Out is NOT Bit-perfect and it is Oversampled - donīt use it with NOS-DAC..."
some say: "...use SPDIF for NOS-DAC if your DAC has an Crystal 8412 (or 8414)-Receiver..."
some say "...donīt use it as a transport...!"
and so on...

The Problem is that Iīm no electrician and I cannot read (understand) the datasheets of those ICīs.

Can anyone explain me only one thing:
What happens exactly with the oversampled signal from the
"Transport" when it comes to the NOS-DAC and is this Player worth to be combined with this DAC via SPDIF?

Thanks for your Help
Markus
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Old 31st May 2008, 03:29 PM   #2
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Default Re: CD 723 Philips ...

Quote:
Originally posted by 101dm


I also read about tweaking the Philips CD 723 - I just want to use it as a Transport for my NOS-DAC (from Scott Nixon).

some say: "...SPDIF-Out is NOT Bit-perfect and it is Oversampled - donīt use it with NOS-DAC..."
some say: "...use SPDIF for NOS-DAC if your DAC has an Crystal 8412 (or 8414)-Receiver..."
some say "...donīt use it as a transport...!"
and so on...

Hello,
to clear things a bit:
- in stock form the SPDIF output of this player is not bit perfect, since a -0.5dB scaling is applied by default
- SPDIF is always non-oversampled
-I also read that the SPDIF output of CD723 is also pretty poor

BUT

- you can disable this scaling and then achieve bit-perfect output installing a "hacker" (http://benjamin.silvestre.club.fr/cd...ck/hack_e.html)
-you can improve digital out as described by Nuuk and others, but you can also extensively tweak the player since it has a lot of free space inside the cabinet.

Cheers
Andrea
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Old 1st June 2008, 09:22 AM   #3
101dm is offline 101dm  Germany
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Hello Andrea,

thank you for your answer.

Iīve read about the "Hacker" - but itīs a pity that I donīt have much enough knowledge in those things.
So it will be to difficult for me integrating the hacker in the CDP.

A good way for me seems to improve the digital out like on NUUKs website.

Do you have any experiences in the Mods described there (...soundwise)?

Greetings
Markus
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Old 1st June 2008, 01:27 PM   #4
peufeu is offline peufeu  France
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Location: Lyon, France
Basically the 723 is a very low price and very low quality player. Its hacking potential comes from the low price (if you kill it, you don't cry).

I would suggest you start with a better designed player Basically any cheap player that has a bit-exact spdif output... I'm against the art of turd polishing, lol.
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Old 2nd June 2008, 09:16 AM   #5
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Location: near Milano , Italy
Quote:
Originally posted by 101dm
Hello Andrea,

thank you for your answer.

Iīve read about the "Hacker" - but itīs a pity that I donīt have much enough knowledge in those things.
So it will be to difficult for me integrating the hacker in the CDP.

A good way for me seems to improve the digital out like on NUUKs website.

Do you have any experiences in the Mods described there (...soundwise)?

Greetings
Markus
Hi Markus,
I did a different modding of the player, basically making it a different beast with TDA1541A-S2 inside, Tent master clock, synchronous reclocking, transformer I/V, etc.

But I wouldn't call that a "mod" but more a complete reconstruction (keeping the transport and control logic)

Cheers

Andrea
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