Author Topic: kajak12; diy clock  (Read 30893 times)

Offline kajak12

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Re: kajak12; diy clock
« Reply #40 on: October 10, 2010, 12:45:45 PM »
what i really like about this regulator is the wide tracks,trichord use skinny tracks on their clocks more copper to carry the power to the crystal.
still discovering the link between electronics and audio reproduction.so much to learn and so little time

Offline ozmillsy

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Re: kajak12; diy clock
« Reply #41 on: October 10, 2010, 12:58:22 PM »
Do I need the bread board, or dont I?   I'm a little confused.....
It's all about the music,, not the equipment.

Offline kajak12

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Re: thought i would post this privately re cd7u
« Reply #42 on: October 10, 2010, 02:58:12 PM »
Now you dont new design developed last night
still discovering the link between electronics and audio reproduction.so much to learn and so little time

crazikid

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Re: kajak12; diy clock
« Reply #43 on: October 10, 2010, 04:54:02 PM »
very nice mario.. would u like me to send you a jensen cap to try in your clock?

Offline kajak12

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Re: kajak12; diy clock
« Reply #44 on: October 10, 2010, 09:03:23 PM »
very nice mario.. would u like me to send you a jensen cap to try in your clock?
yeh why not you never know what will happen good idea 99
still discovering the link between electronics and audio reproduction.so much to learn and so little time

crazikid

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Re: kajak12; diy clock
« Reply #45 on: October 10, 2010, 09:14:22 PM »
pm your address and i'll send to you

Offline ozmillsy

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Re: kajak12; diy clock
« Reply #46 on: October 13, 2010, 07:24:16 AM »
* Bread board, tick, [on hand]
* Cap, dubilier, tick.   [on hand]
* Regulator, tick [on hand]
* Low jitter crystal,  tick, [on hand]
* Battery power supply, tick [on hand]
* Socket, [on hand]


Mario,  how long to assemble,  30mins?    Since you're visiting next week, you can supervise.  
« Last Edit: October 19, 2010, 09:58:55 PM by ozmillsy »
It's all about the music,, not the equipment.

Offline kajak12

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Re: kajak12; diy clock
« Reply #47 on: November 05, 2010, 06:01:32 PM »
http://www.soundlabsgroup.com.au/p/LC-S79000/LC+Audio+Low+Noise+DC+Regulator

is this a low noise regulator for all you tech people
still discovering the link between electronics and audio reproduction.so much to learn and so little time

Offline zenelectro

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Re: kajak12; diy clock
« Reply #48 on: November 08, 2010, 01:41:10 PM »
http://www.soundlabsgroup.com.au/p/LC-S79000/LC+Audio+Low+Noise+DC+Regulator

is this a low noise regulator for all you tech people

WRT Power supplies for clocks and general capacitor arrangements, it is
important to have bypass caps with short leads and the final one should be
very close to the oscillator itself.

Check image below. This is a very low noise discrete regulator powering a very
low jitter clock. Note the last bypass cap is mounted on the oscillator itself.
Everything is referenced to the copper ground plane.

It is not recommended to run long twisted leads to caps for digital bypassing.

For those with electrocap phobia, I have SMT film caps on the way to replace
oscons :) :)

cheers

Terry
« Last Edit: November 08, 2010, 01:43:55 PM by zenelectro »

tuyen

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Re: kajak12; diy clock
« Reply #49 on: November 08, 2010, 02:32:11 PM »
Hi Terry,

Looks good.. any chance for a small production of these so I can try one in my cd94? :)

I'm trying to clean up my setup too.. if I can get great sound without having leads running out of the case, I would prefer take that direction.

cheers

crazikid

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Re: kajak12; diy clock
« Reply #50 on: November 08, 2010, 06:13:05 PM »
hi terry. i would be interested in this as well.
JAmes

Offline kajak12

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Re: kajak12; diy clock
« Reply #51 on: November 08, 2010, 08:41:20 PM »
Hi Terry,

Looks good.. any chance for a small production of these so I can try one in my cd94? :)

I'm trying to clean up my setup too.. if I can get great sound without having leads running out of the case, I would prefer take that direction.

cheers

yeh tuyen get one so we can have a clock shootout   kajak12 vs zenelectro  :D
still discovering the link between electronics and audio reproduction.so much to learn and so little time

Offline flemo

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Re: kajak12; diy clock
« Reply #52 on: November 09, 2010, 12:56:37 AM »
Definitely interested in how it performs, and what sort of cost are we looking at?

Cheers, flemo. 

Offline zenelectro

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Re: kajak12; diy clock
« Reply #53 on: November 09, 2010, 11:46:43 AM »
The big question is which oscillator to use.

Theoretically the goal is lowest jitter.

But I think people dont always prefer lowest jitter.

Some observations - help me make sense out of them:

a) Steven doesn't like Tentlabs clocks / prefers others. Tent clocks are one of the lowest jitter currently available (at a reasonable price).

b) Tent clocks were used on Terrafirma but Joe has changed. The new clock has worse jitter specs. He prefers the newer one.

c) Steven prefers the older version of the clocks he uses. Almost certainly, this would have higher jitter.

So where does this leave us?   

If I get a batch of oscillators made, the supplier needs me to specify what to make. These specs will be in the form of
what they call phase noise at a certain offset from carrier.

The carrier is the oscillator frequency, say 11.2896MHz. Phase noise (jitter), is measured at frequencies 10Hz / 100Hz / 1kHz / 10kHz etc
away from that 11.2896MHz carrier. Then you get a graph which plots the noise. See below a phase noise plot for an ultra low jitter
clock.
 
So which phase noise plot sounds good?

Traditionally I have gone for lowest phase noise at low frequencies (see 10Hz region in plot) but the feedback I get from people using killerdacs is often not supporting that.


cheers

Terry

tuyen

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Re: kajak12; diy clock
« Reply #54 on: November 09, 2010, 12:28:54 PM »
Can some pin sockets be installed so different oscillator chips can be used?


Offline ozcal

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Re: kajak12; diy clock
« Reply #55 on: November 09, 2010, 07:06:57 PM »
Listening with my ears :)

Offline stevenvalve

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Re: kajak12; diy clock
« Reply #56 on: November 09, 2010, 08:05:36 PM »
Can some pin sockets be installed so different oscillator chips can be used?


Yes that is important. then we can use any 5 v chip.

Offline ozcal

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Re: kajak12; diy clock
« Reply #57 on: November 09, 2010, 08:14:42 PM »
How bout switchable oscillators to match different tastes or music?  ;D
Listening with my ears :)

Offline kajak12

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Re: kajak12; diy clock
« Reply #58 on: November 09, 2010, 08:21:30 PM »
How bout switchable oscillators to match different tastes or music?  ;D
come around one day i will give you a demo of diffrent crystals
still discovering the link between electronics and audio reproduction.so much to learn and so little time

Offline ozcal

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Re: kajak12; diy clock
« Reply #59 on: November 09, 2010, 09:21:59 PM »
Mario , would love to get down and hear your system , never mind different oscillators but until my health improves it aint going to happen unfortunately. :(
Listening with my ears :)