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286  Ultimate Audio Playback / Your questions about the PC -> DAC route / Re: SPDIF limit of 96KHz ??? on: February 20, 2010, 02:10:45 am
Read more about this here:
http://www.tnt-audio.com/sorgenti/zero-one_e.html

24 bits/96kHz via S/PDIF is the limit of the S/PDIF standard -->> I think this is BS, SPDIF standard can do 24/192 too,
the TI48 however maybe not

QUOTE:
The sound card is only used to extract the digital audio from either the DVD-ROM or HDDs. From the sound card, the signal is sent via the Zero One custom 24/192 I^2S cable to the DAC. I^2S is a Philips proprietary data transmission protocol, also used by Accuphase whose implementation is rumoured to use a shared clock. Zero One's separate clock technology should enable a genuine 24bit 192kHz transmission by interleaving two 24bit 96kHz channels. It may seem strange for a start-up company to adopt an uncommon interface standard in its first product, but it gives them absolute design freedom to optimise every link in the data chain to match their particular needs rather than bodge to fit existing audio technology. The I^2S output is supplemented by a S/PDIF coaxial (RCA) and a TOSLink optical inputs & outputs but these would prevent use of the Ti48 features that make it unique, so they're superfluous.
END QUOTE
287  Ultimate Audio Playback / XXHighEnd Support / Re: XXHIGHEND-M2TECH-WIN XP on: February 18, 2010, 12:04:08 am
Nice,

So Hiface is working !?
KS too ??, guess not, but you can do double arc prediction (DAP) 24/88.2 with #3Engine

If you undemo, you can also chooce "processor core appointment scheme" under xx settings
This wil also make things somewhat better.

I really prefer scheme 3 for that, but this depends on sytem.

Cheers,

Roy
288  Ultimate Audio Playback / XXHighEnd Support / Re: XXHIGHEND-M2TECH-WIN XP on: February 17, 2010, 10:14:09 pm
Quote
Could the limited amount of songs played, depend on this beeing a demo version ???

Demo version of xx has limitations, yes
289  Ultimate Audio Playback / Playback Tweaks and Source related subjects / Re: How I tweaked my Vista virtually dead (also for W7) on: February 17, 2010, 09:23:45 pm
And for NTFS, did we already mentioned this one ?

http://www.tomstricks.com/how-to-disable-the-ntfs-last-access-time-stamp-in-windows-vista-or-in-xp/
290  Ultimate Audio Playback / Playback Tweaks and Source related subjects / Re: How I tweaked my Vista virtually dead (also for W7) - NTFS vs FAT on: February 17, 2010, 08:52:11 pm
QUOTE:

NTFS is a journaling file system, that is, before it makes any changes to a file,
it first writes out a journal entry. Once the data is successfully written out,
it marks the journal entry as complete. That way if the computer crashes in the middle of changing a file,
it can examine the journal and restore the file to it's original state. But this increases the number of writes to the SSD,
which will both slow it down and decrease its overall lifespan.

The FAT file systems do not use journaling and thus will operate a bit faster than NTFS on an SSD and the drive will last a bit longer.

NTFS does offer a number of other features that probably offset the speed difference. In addition to the journaling,
which will reduce the need for a chkdsk after a crash, you also get compression, encryption and file permissions.

If you need raw speed for whatever reason, FAT32 is the way to go. Otherwise, NTFS is likely better

END QUOTE


This will most likely terminate the next services:

C:\$Mft (NTFS0-MFT (Master File Table)
C:\$LogFile (NTFS-volume log)

Roy

http://www.ntfs.com/ntfs_vs_fat.htm

PS: Nice thing though is if you do format with Fat32, you can always convert to NTFS later, but not vice versa
291  Ultimate Audio Playback / Your questions about the PC -> DAC route / Re: S/PDIF Cable on: February 17, 2010, 07:42:59 pm
The reason why the cable must have a for eg. 75ohm load,
is because the impedance of a cable is changed with frequency.

If there is no 75ohm load, mismatch will happen at certain freq.

but there is also:

risetime, dispersion, skin effect etc etc
also the architecture of the cable, the distance between dataline and ground.
292  Ultimate Audio Playback / Your questions about the PC -> DAC route / Re: S/PDIF Cable on: February 17, 2010, 07:26:26 pm
The value for the impedance depends on the input resistor.
Kinda impedance correction, if resistor and chip-to-chip connection is 75ohm.
This rules out the total capacitance of cable.
Correct me if I'am wrong here.

also:
75 ohms: The characteristic impedance 75 ohms is an international standard, based on optimizing the design of long distance coaxial cables. 75 ohms video cable is the coaxial cable type widely used in video, audio and telecommunications applications. Generally all baseband video applications that use coaxial cable (both analogue and digital) are matched for 75 ohm impedance cable. Also RF video signal systems like antenna signal distribution networks in houses and cable TV systems are built from 75 ohms coaxial cable (those applications use very low loss cable types). In audio world digital audio (S/PDIF and coaxial AES/EBU) uses 75 ohms coaxial cable, as well as radio receiver connections at home and in car. In addition to this some telecom applications (for example some E1 links) use 75 ohms coaxial cable. 75 Ohms is the telecommunications standard, because in a dielectric filled line, somewhere around 77 Ohms gives the lowest loss. For 75 Ohm use common cables are RG-6, RG-11 and RG-59.
293  Ultimate Audio Playback / Playback Tweaks and Source related subjects / Re: How I tweaked my Vista virtually dead (also for W7) on: February 17, 2010, 07:07:41 pm
Quote
...... so have to do a new setup anyway.

Don't forget to check the firmware of your solid state! This is your change to update I think!

Johan

Thnx Johan,

Offcourse I will
I believe 1.42 Beta is out (maybe the final)(Currrently on 1.30)
I have 2 weeks to make things happen,
Could use this opp to do some OS testing too!

Roy
294  Ultimate Audio Playback / Playback Tweaks and Source related subjects / Re: How I tweaked my Vista virtually dead (also for W7) on: February 17, 2010, 06:46:52 pm
To come back on those remaining services, on the resource monitor.

What about setting up SSD in FAT32 mode ??

I have read its much faster, and there is less I/O going on.
But there are disadvantages too, like max filesize and max amount of files in folder etc.
But we don't use large files and just create a smaller partition.

Could this be an option ???

My W7 expires in 14 days, so have to do a new setup anyway.

Maybe I will create some partions and test different OS. (XP,Vista and W7)
295  Ultimate Audio Playback / Your questions about the PC -> DAC route / Re: S/PDIF Cable on: February 17, 2010, 06:02:53 pm
Also a good site for DIY and cables:

http://www.vhaudio.com/
296  Ultimate Audio Playback / Your questions about the PC -> DAC route / Re: S/PDIF Cable on: February 17, 2010, 05:59:58 pm
From the thread, apparently the old Belkin Synapse Platinum Digital cables (the blue ones from the 1990s) are the 'dog's bollocks', as we say here in the UK. You may notice that there is a poster called 'miab' who is offering these cables for $65 each plus shipping. I've just ordered a couple of these from him, and they should be in the post to me right now. I'm hoping to be able to convert one to BNC and use it for my wordclock. Assuming I don't screw it up and need the other one, I may have one spare. I'd be happy to sell it for the price I paid for it (even if I'm hit with customs duty, the price shouldn't be more than £60 plus shipping). Alternatively, you might want to contact miab directly to ask if he has more...

Hey Mani,

A good SPdif cable is important because data and clock are combined in one signal.
So if data and clock are split up, cable becomes a bit "less" important

Do you have experiences in using different cables on just the wordclock ??

I thought this should only be a decent shielded 75ohm cable with BNC connectors.
Nothing more nothing less.
Or maybe this is actually what you are doing.

Roy
297  Ultimate Audio Playback / Your questions about the PC -> DAC route / Re: S/PDIF Cable on: February 17, 2010, 04:48:01 pm
Thnx Mani for stepping in, (and Peter)

And for providing some decent links
I have a disc somewhere with all my links from the past on making good cables.
But can't find a damm thing anymore. (long time ago)
And things are changing at such a fast rate.

Boleary's wish in length is too short, also my advise 0.80m-1.50m certainly not shorter.

About those connectors indeed they should be 75ohm, but I can not believe the M-audio or MSB or Hiface has perfect 75ohm Receptacles, (yea, BNC on HiFace, OK)
or even a precision 75ohm resistor on their part.
It doesn't stop with just the cable, when you take a look inside your equip. you start to wonder why invest in a expensive cable at all, without doing the inside too.
And with equipment I also mean: the expensive sh|t too.

There are 75ohm RCA connectors indeed.
http://www.canare.com/ProductItemDisplay.aspx?productItemID=40
But you have to look what connector fits the Belden 1694A cable for eg.

Personally I have good experiences using Eichmann on WBT Next-gen Receptacles (analog and digital)
But then again for digital BNC is better and cheaper, but not always do-able, and if you make just 1 cable,
you have to buy a BNC krimp-tool too.(??$)

Btw. I always peal off the outside PVC cover from the cable and use teflon plumbers tape instead.
And I always make a seperate ground connection instead of using the outside shielding mesh of the cable)
Leave the mesh and foil in place, but don't connect it to ground, use seperate wire for that.

But your options are still open Boleary............
Don't make your decision that fast, do some reading about the subject. (you don't have the hiface yet, anyway)

You could also try to get some canare 75ohm RCA connectors, (US only, I believe) they are much cheaper then eichmann (maybe 15$ per 2)

And for last, its always hard to judge, when not listened to what you actually buying.
But you have no choice with DIY.
And dealers that provide a decent means of trying them out, mostly provide you with far too expensive cables.
But don't forget you always have the right to return after several days. (even if you buy on the internet)

getting crazy already...hehe

Grtz

Roy
 
298  Ultimate Audio Playback / XXHighEnd Support / Re: XXHIGHEND-M2TECH-WIN XP on: February 16, 2010, 01:05:09 am
Hi jkeny,

Just did some reading about your HiFace mods on diyAudio

Nice job, I2S, battery powered......you take it all the way.
299  Ultimate Audio Playback / Your questions about the PC -> DAC route / Re: S/PDIF Cable on: February 16, 2010, 12:02:03 am
Quote
What connectors are you planning to use on NOS1 then??

None ... No external i2s for sure ...


With your plans do we still need a SSD in PC for better SQ ?
 Happy
300  Ultimate Audio Playback / Your questions about the PC -> DAC route / Re: S/PDIF Cable on: February 15, 2010, 05:41:28 pm
There are I2S Cables Available
There are I2S Cables Available

But is there a standard, guess not. (ISO)
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