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Old 8th April 2005, 12:01 AM   #1
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Default LClock XO3

Who has installed one of these and what do you think? Was there a difference or placebo effect?

I have a Philips DVD Q50 feeding SPDIF to my P3A DAC. Will I get a benefit?

Thanks
Chris
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Old 8th April 2005, 02:29 AM   #2
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Be careful with voltage. Soundlabsgroup (AU) recommends 15V max.
They sound okay, bit warm. Remove large cap from the clock board and use very clean separate power supply.

The clock provides two outputs, useful if you need to clock two IC. I used this feature to clock DSP + upsampler in my DCD1650 player to great results !

I have also installed another 2 of these, however, XO2 are also very good (get them if you still can) and allow higher "row" DC, up to 22V I think.

(…modified P3A as well...)

Good luck

Extreme_Boky
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Old 8th April 2005, 03:47 AM   #3
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Quote:
Originally posted by Extreme_Boky
Be careful with voltage. Soundlabsgroup (AU) recommends 15V max.
They sound okay, bit warm.
How can a clock sound warm? This doesn't make sense

Quote:
Originally posted by Extreme_Boky

(…modified P3A as well...)

I'm interested in your P3A mods. What have you done here?

Thanks
Chris
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Old 8th April 2005, 06:54 AM   #4
juancho is offline juancho  United Kingdom
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Hi,
I don't understand how a clock can sound warm either....

I've used a couple of them and they are reliable and have provided a decent improvement with an Arcam Alpha 5+ and most impressively when I used one to re-clock a DAC and synched the second ouput back to drive my CD transport.

However, I must post a warning re technical assistance from LC Audio. I recently purchased one of their Zap filters and was unable to get it to work as they recommend connecting it. Whilst they were good about replacing it, they never replied to e mails to help me implment it and so I had to return it.
Cheers
David
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Old 8th April 2005, 12:43 PM   #5
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Quote:
Originally posted by juancho
Hi,
I don't understand how a clock can sound warm either....
David
Hi

I do. Depending on the jitter (spectral content, amplitude), the sonical character changes. All depends on DAC type as well.

Lower jitter is always better in my ears.........
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Old 8th April 2005, 01:09 PM   #6
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Quote:
Originally posted by Guido Tent


Hi

I do. Depending on the jitter (spectral content, amplitude), the sonical character changes. All depends on DAC type as well.

Lower jitter is always better in my ears.........

I would only think it would make it more accurate, not warmer. The analog stage would be responsible for a warmer sound.
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Old 8th April 2005, 01:19 PM   #7
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Quote:
Originally posted by chrisb03



I would only think it would make it more accurate, not warmer. The analog stage would be responsible for a warmer sound.

Hi

my exeriences:

Wideband jitter makes it warm, LF jitter decreases accuracy (focus and downwards dynamic range start to suffer)

sub LF jitter affects tonality

cheers
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Old 13th May 2011, 11:14 AM   #8
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Hi
I second to Extreme_Boky that you should always use a separate precision power supply for a clock, it will always improve the sound, even in cases where you use a isolated output, like we do on some of our clocks.
The sound structure is very sensitive to the clock, i have even tried cases where you change the type of series capacitor from MICA to plastic film, and this makes a tremendous difference in sound. Even jitter is not affected.
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Old 13th May 2011, 11:43 AM   #9
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Quote:
Originally Posted by Lars Clausen View Post
Hi
I second to Extreme_Boky that you should always use a separate precision power supply for a clock, it will always improve the sound, even in cases where you use a isolated output, like we do on some of our clocks.
The sound structure is very sensitive to the clock, i have even tried cases where you change the type of series capacitor from MICA to plastic film, and this makes a tremendous difference in sound. Even jitter is not affected.
Hi Lars

We can measure that the jitter IS affected when you change caps

best
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