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Old 10th February 2012, 09:59 PM   #111
Coris is offline Coris  Norway
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First an question for Jae Hong Lee .
20Mhz/HDMI oscillator is an quartz resonator (the same 27Mhz one). Did you used an 3,3v 20Mhz TCXO as replacement, or a lower powered oscillator...?

Then a suggestion... You may also try to replace the oscillator for the audio stage (ESS9018), with an 80Mhz, 100Mhz or more... You will have too a pleasant surprise for the sound quality of your mod player...
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Old 13th February 2012, 12:06 AM   #112
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I used 3.3 V 20Mhz TCXO from digikey. I supply all DC as pure linear power which is very important to TCXO's full potential. I supplied 3.3 V from nearby IC to TCXO DC input with very thin jumper wire.

I have OPPO 93 , not 95. I don't have ESS9018 in my analog DAC board.
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Old 13th February 2012, 06:34 AM   #113
Coris is offline Coris  Norway
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Thanks for the answer.
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Old 13th February 2012, 11:44 PM   #114
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The picture which shows installing TCXOs to OPPO 93/95 is here ( http://blog.paran.com/blog/detail/po...76002&hrefMark= )Click the image to open in full size.
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Old 18th February 2012, 11:42 PM   #115
jvd is offline jvd  New Zealand
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Default 0.01PPM CRYSTALS

Jae Hong Lee - PLEASE report your sonic reults when you install the 0.01PPM crystals.

THANKYOU IN ANTICIPATION.
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Old 18th February 2012, 11:56 PM   #116
jvd is offline jvd  New Zealand
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Default EXTREME TOLERANCE OSCILLATORS

Earlier in the thread Coris reported ...

" I just heard the sound difference when used in a DAC a 100ppm oscillator, and a 0.3ppm oscillator (with the same frequency and power supply). I can tell you that is HUGE ..."

Anyone else able to give their experience under similar conditions, where the only change is the oscillator ?
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Old 19th February 2012, 07:51 AM   #117
Coris is offline Coris  Norway
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Quote:
Originally Posted by jvd View Post
Jae Hong Lee - PLEASE report your sonic reults when you install the 0.01PPM crystals.

THANKYOU IN ANTICIPATION.
He also reported picture improvements after replacement of the original oscillator.
I think the results appreciations of a such oscillator improvement have its part of subjectivity... That because is better that one do it himself this change for have own conclusions. And will be so many reports...
Anyway, the improvement in both picture and sound is very real!
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Old 19th February 2012, 06:01 PM   #118
jvd is offline jvd  New Zealand
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Thanks v much Coris for your reply. I must say your posts have been many and very helpful. Cheers
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Old 25th February 2012, 02:58 AM   #119
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This thread is going nowhere. Just a big b---- session.
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Old 25th February 2012, 03:46 AM   #120
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