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Old 28th March 2006, 11:31 AM   #1
Google is offline Google  United States
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Default Tent XO3 Clock

I am working at reclocking the spdif of my Sony CDP-X5000 and I was told by a local distributor that the 74HC74 can be employed for reclocking. He said that the Tent XO3 uses a Philips 74HC74N for reclocking and he offered to share with me the design of the XO3 for a small fee.

It would be great if someone can point to me where I can download the design or send me a copy of the design of the Tent XO3 clock. Many thanks!
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Old 28th March 2006, 11:33 AM   #2
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Why not just buy a Tent clock, they're not expensive. Anyway, Guido is a member here, so you could always ask nicely, rather than ripping him off.
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Old 28th March 2006, 03:11 PM   #3
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Default Re: Tent XO3 Clock

Quote:
Originally posted by Google
I am working at reclocking the spdif of my Sony CDP-X5000 and I was told by a local distributor that the 74HC74 can be employed for reclocking. He said that the Tent XO3 uses a Philips 74HC74N for reclocking and he offered to share with me the design of the XO3 for a small fee.

It would be great if someone can point to me where I can download the design or send me a copy of the design of the Tent XO3 clock. Many thanks!

Indeed, it is an HC74

It is not my practice to share the designs, and my distributors are aware of that. They do not have circuit diagrams.

As it is weird practice from distributors, to earn (extra money) on sharing my designs (on top of selling them), I would appreciate if someone could forward a link to this thread to this distributor, so he is aware of my statement.

best
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Old 28th March 2006, 07:20 PM   #4
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What do you guys make of this PLL (Phase Locked Loop)
synthesizing digital output

http://us.geocities.com/koalavilla/audio_tweak.htm
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Old 28th March 2006, 07:27 PM   #5
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Quote:
Originally posted by t.
What do you guys make of this PLL (Phase Locked Loop)
synthesizing digital output

http://us.geocities.com/koalavilla/audio_tweak.htm

I wonder why someone uses a PLL in a 1-box solution
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Old 28th March 2006, 07:33 PM   #6
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It's all in the link:

Quote:
I found that this PLL is a effective tweak. This is also the same skill used by Theta.
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Old 28th March 2006, 07:35 PM   #7
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Quote:
Originally posted by Guido Tent



I wonder why someone uses a PLL in a 1-box solution
It is strange isn't it!
I just found that site whilst I was browsing the net looking for SAA7220 datasheet.
Whilst your here Guido I wondered if I could ask you a quick question if you don't mind I'd like to clock my spare Arcam A5 cdp (not the + version) with one of your XO's, I use this player in NOS.
Would it be better to fit your clock to the SAA7220 or directly to the SAA7310?

Cheers
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Old 28th March 2006, 07:42 PM   #8
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Quote:
Originally posted by t.


It is strange isn't it!
I just found that site whilst I was browsing the net looking for SAA7220 datasheet.
Whilst your here Guido I wondered if I could ask you a quick question if you don't mind I'd like to clock my spare Arcam A5 cdp (not the + version) with one of your XO's, I use this player in NOS.
Would it be better to fit your clock to the SAA7220 or directly to the SAA7310?

Cheers
Hi

The clock quality is most important at the DAC. The rest of the players' electronics runs in sync.

Unfortunately the clock usually is generated in the decoder or servo electronics, and transported through some chips to the DAC, adding more jitter.

Depending on the circuitry, the DAC can be clocked directly from a newly placed clock. Usually the TDA1541 runs at half the crystal frequency, reason why my clockboards do have an optional /2 output.

If above doesn't work out, best to clock the chip as close as possible to the DAC, i.e. SAA7310.

best
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Old 28th March 2006, 07:53 PM   #9
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Quote:
Originally posted by Guido Tent


Hi

The clock quality is most important at the DAC. The rest of the players' electronics runs in sync.

Unfortunately the clock usually is generated in the decoder or servo electronics, and transported through some chips to the DAC, adding more jitter.

Depending on the circuitry, the DAC can be clocked directly from a newly placed clock. Usually the TDA1541 runs at half the crystal frequency, reason why my clockboards do have an optional /2 output.

If above doesn't work out, best to clock the chip as close as possible to the DAC, i.e. SAA7310.

best
Cheers Guido,

The standard A5 cdp has bog standard clock circuit compared to the A5+, it just goes to the SAA7220
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Old 28th March 2006, 07:57 PM   #10
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Quote:
Originally posted by t.


Cheers Guido,

The standard A5 cdp has bog standard clock circuit compared to the A5+, it just goes to the SAA7220
try to directly clock the DAC too, when upgrading your clock, it is worth the trouble

have to feed our daughter and to bed now, it is 11 AM here

cheers
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