Jocko Homo said:
Coz the site says it is a crystal! If he cannot differentiate between a crystal and crystal-oscillator well then.........I go back to my honey!
Maybe I need the rubber 
Ooops.Why don't you just build a clock from Tentlabs? 🙂 I use one as an async reclocker and it's great. I'm using a TL431 shunt regulator, not hard to build.
oh man.. well. to each his own 🙂 I've also built kwak's async reclocker. I haven't done a direct comparison against the tent labs and his reclocker.
Too lazy i think....
Too lazy i think....
Elso Kwak said:
You did not build this one did you ?? How can you judge a book by its cover ?
Guido Tent said:
Marketing ?
Of course jitter is the spec we are looking for. That is why most of us replace the standard circuits for.
I will order one and I will post my results. Just wait 😉
Should I trust your clock design then ?!? 😉 I judged it by the cover you know. There is a comparator in it, I never like oscillator circuits with comparator ICs in them 😀
From the parts-value alone, it is hands-down bargain. However, you get the full working kit!!!!!!!!!!!!
I think everyone should at least consider it as a cheap starting point that promises a lot.
However, it was unjustly compared straight away with the best there is. But, at what price level?? And deemed unsuitable for anything! I (almost?) feel guilty for even suggesting it may sound good!
I personally spend A$30 on xtal oscillator + comparator / buffer, and another A$150 on dedicated low noise power supply + silver wiring. The results are better than XO2 and XO3, which I could get very easily here in Australia. The price for XO3? Well, they are A$380. And you still have to spend that A$150 for a dedicated high quality power supply. So, A$180 or A$530? (the difference goes in to MY and not someone else’s pocket).
This complete KIT looks promising for only $30US. And installed, it should look very good. Customers might even think that it is something special because it is suspended…
However, it HAS TO SOUD decent as well – this just might be the case based on parts quality and my first positive impression.
Until one of us here on forums comes with something like this for $30US, I’ll always search for alternatives, which could sound decent.
Extreme_Boky
I think everyone should at least consider it as a cheap starting point that promises a lot.
However, it was unjustly compared straight away with the best there is. But, at what price level?? And deemed unsuitable for anything! I (almost?) feel guilty for even suggesting it may sound good!
I personally spend A$30 on xtal oscillator + comparator / buffer, and another A$150 on dedicated low noise power supply + silver wiring. The results are better than XO2 and XO3, which I could get very easily here in Australia. The price for XO3? Well, they are A$380. And you still have to spend that A$150 for a dedicated high quality power supply. So, A$180 or A$530? (the difference goes in to MY and not someone else’s pocket).
This complete KIT looks promising for only $30US. And installed, it should look very good. Customers might even think that it is something special because it is suspended…
However, it HAS TO SOUD decent as well – this just might be the case based on parts quality and my first positive impression.
Until one of us here on forums comes with something like this for $30US, I’ll always search for alternatives, which could sound decent.
Extreme_Boky
I could not agree more, Boky. When it sounds decent and way better than the original circuit it is OK to me for that price.
Guts feeling
You sound like Jocko Jean-Paul.
Just follow your guts feeling as I did with the girl in my avatar.
[There are now two more clocks with a comparator: the LCAudio XO3 and the Hagclock] Coincidence of course.
jean-paul said:
You sound like Jocko Jean-Paul.
Just follow your guts feeling as I did with the girl in my avatar.
[There are now two more clocks with a comparator: the LCAudio XO3 and the Hagclock] Coincidence of course.
No no, I started to sound like yourself. I was only joking because I find it extremely hard to believe that this product can be fully judged by seeing just 2 x LM317, one 74VHC04 and an unknown canned XO ( which could have decent jitter specs ) .....
The lack of certain specs does not exclude the possibility that this clock has decent measurements in those aspects nor that it might be just a good product.
The lack of certain specs does not exclude the possibility that this clock has decent measurements in those aspects nor that it might be just a good product.
How do we know?
It is easy.
1.) It has a '317, and from what I see, just a stock implementation. A '317 without some sort of noise reduction is going to have too much jitter. Period.
2.) The guy who builds it is in China. He brags about "ppm". Typical of all clock products from there: they obsess on the wrong spec. Period.
Jocko
It is easy.
1.) It has a '317, and from what I see, just a stock implementation. A '317 without some sort of noise reduction is going to have too much jitter. Period.
2.) The guy who builds it is in China. He brags about "ppm". Typical of all clock products from there: they obsess on the wrong spec. Period.
Jocko
We understand your point, the sinewave is the best way to go.
However, there is the problem of getting that great waveform into the original circuit. Think of exactly what that input gate is. That is why the comparator is added. Its sole purpose is optimal interfacing, trying to make up for limitations elsewhere.
jh🙂
Re: How do we know?
How many ppm do you have to have in order not to hear any pitch shift? I should guess 10000 or at least 1000 ppm. So 50 or 10 ppm is nothing to pay extra for.
It's a shame that too few believe you but the last statement is pretty easy to understand for people with normal brain capacity.Jocko Homo said:
How many ppm do you have to have in order not to hear any pitch shift? I should guess 10000 or at least 1000 ppm. So 50 or 10 ppm is nothing to pay extra for.
It is a xtal oscillator (the specs are wrong saying it is only a xtal) with a decent power supply - all for $30 only. To me - unbelievable bargain.
You have to be crazy to miss on this one!!!
Extreme_Boky
You have to be crazy to miss on this one!!!
Extreme_Boky
Not that easy.
1.) LM317s don't have jitter. Analog devices can't have jitter. They have other characteristics as noise etc. An LM317 can have too much noise which can add to the jitter specs of the clock circuit of the cd/dvdplayer in question. But compared to the original clock with a '04 and a 7805 it just might be a tad better....This particular clock is advertised as a novice device for 30$. If it is better than the original clock a lot of people will be satisfied with the results. Why go for the very best in all cases ( with for example brand new dvd players for 35 Euro ) ??
2.) EVERYTHING audio/electronics/computer is from China nowadays,this counts for socalled A brands as well. There are few original american or european manufacturers left. When the gear is assembled in the US they can write "Made in USA" on it. The joys of a free market system, take it or leave it. Mentioning just the deviation of the given frequency is far from complete but, as said before, that does not exclude the possibility other specs are acceptable/good/excellent. When having components manufactured in China the difference between good quality and **** might be just 25 cents....
Period.
Jocko Homo said:
1.) LM317s don't have jitter. Analog devices can't have jitter. They have other characteristics as noise etc. An LM317 can have too much noise which can add to the jitter specs of the clock circuit of the cd/dvdplayer in question. But compared to the original clock with a '04 and a 7805 it just might be a tad better....This particular clock is advertised as a novice device for 30$. If it is better than the original clock a lot of people will be satisfied with the results. Why go for the very best in all cases ( with for example brand new dvd players for 35 Euro ) ??
2.) EVERYTHING audio/electronics/computer is from China nowadays,this counts for socalled A brands as well. There are few original american or european manufacturers left. When the gear is assembled in the US they can write "Made in USA" on it. The joys of a free market system, take it or leave it. Mentioning just the deviation of the given frequency is far from complete but, as said before, that does not exclude the possibility other specs are acceptable/good/excellent. When having components manufactured in China the difference between good quality and **** might be just 25 cents....
Period.
Sometimes I ask myself why not using a low phase noise oscillator IC with (inherent) low jitter and build your own clock. Only my 2 ct.
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