which clock to choose

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I for one, am impressed

I always thought the mark of a good design was simplicity and concentration on
the aspects of the design that are the most important. Needless complexity seems to be a a diversion for the people who don't know that complexity and good design don't usuall go hand in hand. Look at one of Mr. Pass's designs if you still don't know the difference.

Do your volume knobs go to 11 too ?
 

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I must really be dense.

I don't see what "adjustment of the oscillator" has do do with quality, wrt to performance in CDPs and such. If you guys want to obsess with PPM this and PPM that, then go on right ahead. You really are missing the boat.

But what do I know......I'm not the resident clock monger.

Jocko
 
Eleven, eleven......

Eleven, eleven,
rings no bell,
eleven, eleven,
sounds like hell,
eleven, eleven,
ring my bell,
on eleven-eleven,
I will be back,
eleven, eleven,
talk like heck,
eleven, eleven,
don't pull my leg,
eleven, eleven,
can count to ten,
but,
eleven, eleven.......?
:clown:, .........:clown:...................
 

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Lars Clausen said:
Sorry Guido, the only question i could find from you, is the one about the importance of absolute frequency precision.

Well maybe you can argue that noone can hear if the playing speed is 0,005% off. (As would be the case with a normal 50 ppm xtal.) Others will argue that you can not hear jitter below the 96dB limit of 16 bit CD's. Other's again will argue that you can't hearthe difference between cables with PVC or TEFLON insulation, because the signal only run in the metal part of the cable. Others again will argue that you can never hear the difference between amplifiers if they just have less than 0.1% distortion.

I think the adjustment of the oscillator speaks of quality, and it shows that care has been taken to ensure the quality of a product. Not just that someone bought a 50c component and printed their name on it, in order to sell it for a high price to unknowing customers.

I hope this answers your question, if not please ask again 🙂

Lars,

This was the open question, yes. For a moment I thought you cared for absolulte precision because you did check it, by listening or other tests.

I found +/- 50 ppm is a safe limit, no changes in sound with the bunch of players I tried. Ofcourse we talk about super low frequency jitter here.

regards
 
Lars Clausen said:
Guido: I have made a calculation on the cost of your XO2 clock set with PSU board and all (just to make an example).

I would like to give you an offer:

Let us produce the GT XO kits for you.

The price from us would be: 12 $ ea. for the XO2 set (complete).

Lars,

unless it was some kind of joke, that type of communication
is better suited for email directly to Guido than to post on
the forum.
 
Christer said:


Lars,

unless it was some kind of joke, that type of communication
is better suited for email directly to Guido than to post on
the forum.


Lars,

If you can do such clock with that performance for that price, I wonder why you do not market it yourself.

No back to the thread: Lars, I still do not see any contribution, other than some jealous like reactions to other clock makers, and advertising for LC products.

I think, and members, correct me if I am wrong, the forum is waiting for content.

If that assumption is wrong, I will leave this forum, as content and learning (2 ways) has always been the main reason of being here (and yes, I cannot hide that i market clocks myself).

It is up to the members, let them decide. And be consistent in your decision, please.
 
Dear Guido: I am consistent in my decision, however i removed the post again (after 2 minutes and 30 seconds) on Christers recommendation, because of course i did not want to offend anybody. But if you want to take me up on my offer, it stands anytime.

Now you have seen it, i will also encourage Christer to remove it from his post, most important it is that you have seen it.

Also i don't see how the above message can be any sort of advertising for anything. Can you explain?
 
Lars Clausen said:
Now you have seen it, i will also encourage Christer to remove it from his post, most important it is that you have seen it.

I could remove my post, but since Guided quoted me, it will
still be there, so unless Guido also edits etc.


Also i don't see how the above message can be any sort of advertising for anything. Can you explain?

It wasn't general advertising of a product to arbitrary forum
members, but it was clearly a commercial offer from one
audio professional to another audio professional. I am not
a moderator and haven't memorized the forum rules, but
whether or not it breaks the forum rules, I think it is not
appropriate to make such an offer on a forum of this type.
Besides, most companys would not make offers public at
all.

Edit: BTW, Lars, be happy I spotted it first. I promise you
certain other people wouldn't have told you as politely as
I did. 😉
 
"Silence in the studio!"

(Wonder if P-A will get that obscure Pink Floyd reference?)

Don't worry, Guido, if they don't know that jitter is important, then how will they get the spectral density part right.

Seriously, if any guys here think that all you have to do is make an oscillator that can be adjusted to 11.289600 MHz is all that it takes to make a good clock, then no wonder many feel that a guy who sells a canned part is a con man.

It would be hard not to improve on the clock internal to most CDPs with even the most rudimentary circuit. The amount of digital noise internal to the filter chips used in CDPs.....and most use the filter chip for the oscillator circuit......makes low jitter impossible. Just going to a separate circuit, with minimal regulation is probably a huge improvement over stock.

But until you get jitter numbers down to probably single digits in the pSec range, you have a very long way to go.

And being able to measure that would cost me $12K to buy the thing that it takes to measure it.

Oh......that $12k is the surplus price.

So......unless you are selling tons of clocks.....or have a real job with access to the type of stuff you need to mesure them.........

Good luck making money in the clock business.

At least if you want to sell a really good one.

And then, I doubt that you will make that much money anyway.

Jocko
 
ticking away the moments that make up......

Why are you people picking on Rs(LC) ?
If understand correctly, he just wanted some help in getting his clock cleaned. You guys definitely "cleaned his clock.":clock:

Questions about advertising pretty well settled by his statement:

"OK Jocko, please tell us all: what is the important aspects of a clock for a CDP?"

For which he received two accurate and helpful answers. He would surely not
ask how to design a clock circuit and expect that to be an endorsement of his products. To admit that he does not know what is important in clock design
shows his devotion to the advancement of the art, without concern to the impact on his sales. If he wishes to the the hit on his sales to become a better clock maker, as he says below...... Why not?


"Audio Constructor at L C Audio Technology, i encourage everybody to openly reveal their commercial connections to the Audio Industry. Why not?"
 

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