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Old 2nd January 2012, 11:20 PM   #1041
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Quote:
Originally Posted by pchw View Post
Did you mean C32, C33 and their corresponding bypasses, C19, C20 (from Dario's components diagram)? Currently, I have Silmic II 22uF/16V.
I haven't the dac kit discussing in this thread. I'm trying to share my experiences of my AK4396 tryouts. I mean analog supply capacitors on dac's #18 pin (+5v) and #19 (Analog ground). You can apply same if there are employed caps between #16 (Low Ref) and #17 (High Ref).

On digital supply (#1 Digital Ground, #2 +3.3V) you can employ a ceramic bypass capacitor alone. If you feel necessary, you can add a ~10uF tantalum as decoupling.
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Old 2nd January 2012, 11:31 PM   #1042
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Originally Posted by johnm View Post
You might want to try military spec. tantalum caps on the outputs too (the metal bodied versions, not the cheap yellow or blue caps) - they really do sound quite special.
This very interesting post gets along with my an early post in this thread.

Post #613

But my current favorite is not tantalum. A no-name axial type, blue color, 5uF NOS electrolytic. Yes, an electrolyric. I'm trying everything on everywhere

Last edited by terranigma; 2nd January 2012 at 11:34 PM.
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Old 2nd January 2012, 11:40 PM   #1043
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Originally Posted by ClaveFremen View Post
I do agree, in that position Silmics are not so good, in fact I'm recomending Cerafines there...
I was not in a attitude for offend anyone. I'm just trying to encourage people to attempting their own experiments.

Regards.
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Old 2nd January 2012, 11:41 PM   #1044
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Originally Posted by terranigma View Post
I was not in a attitude for offend anyone. I'm just trying to encourage people to attempting their own experiments.
No problem at all...
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Old 3rd January 2012, 12:13 AM   #1045
pchw is offline pchw  United States
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Quote:
Originally Posted by terranigma View Post
I haven't the dac kit discussing in this thread. I'm trying to share my experiences of my AK4396 tryouts. I mean analog supply capacitors on dac's #18 pin (+5v) and #19 (Analog ground). You can apply same if there are employed caps between #16 (Low Ref) and #17 (High Ref).

On digital supply (#1 Digital Ground, #2 +3.3V) you can employ a ceramic bypass capacitor alone. If you feel necessary, you can add a ~10uF tantalum as decoupling.
Yup, I believe these are the pins connected to the components that I referred to. I will add that to my "explore list".

I think that's the fun of DIY - the ability to hear the changes, if there is any, from parts changes and play them in our own gears. I want to say thank you to Erin to start this thread and many others provided mod suggestion. I have had fun during the holiday with this dac. Especially for a little over $100 of parts altogether, this has been my lowest cost entertainment and yet full of fun in recent winter holidays that I can remember
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Old 3rd January 2012, 10:59 AM   #1046
Veggiel is offline Veggiel  Belgium
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Originally Posted by terranigma View Post
My current setup employs 100nF Ceramic as bypass and 100uF/16v Nichicon PZ as decoupling. This combination smashed my previous favorite Elna SilmicII's.
Can you give a link to the Nichicon capacitors, I have tryed searching for them but did not find any of 16v only 200v and 400v.

Last edited by Veggiel; 3rd January 2012 at 11:26 AM.
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Old 3rd January 2012, 12:21 PM   #1047
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Originally Posted by Veggiel View Post
Can you give a link to the Nichicon capacitors, I have tryed searching for them but did not find any of 16v only 200v and 400v.
It seems only high voltage series in production nowadays. I found them at a local shop where is not a surprise to find such parts. Nichicon PZ is just as an example. There are in-production candidates from other brands and Nichicon like CA and PX. CA series 100uF/160V has adequate size (16x25mm) despite its very high ripple value. PX 100uF/25V seems a good candidate also.

Green 100nF ceramics are what i used at digital and analog side.
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Old 3rd January 2012, 02:51 PM   #1048
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Quote:
Originally Posted by johnm View Post
You might want to try military spec. tantalum caps on the outputs too (the metal bodied versions, not the cheap yellow or blue caps) - they really do sound quite special.
Quote:
Originally Posted by terranigma View Post
But my current favorite is not tantalum. A no-name axial type, blue color, 5uF NOS electrolytic. Yes, an electrolyric. I'm trying everything on everywhere
I reinstalled those tantalums with my last setup again. I see no reason for pull up them actually instead of attitude of "try some different". These tantalums took my attention during days that i was trying to figure out difference between dc-coupling (no-cap, direct connect) and ac-coupling (with dc-blocking cap) with my balanced configured gainclone amplifier. I couldn't detect any difference between them.

There is 2.5V DC at AK4396's analog outputs when it refers to ground. Thus, it requires a cap at output when feeding an unbalanced amplifier which is a general case. But, in balanced configuration (instrumentation amplifier) dc is not visible if you isolate your amplifier from your source's (this case AK4396 dac itself) ground.

Last edited by terranigma; 3rd January 2012 at 02:55 PM.
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Old 5th January 2012, 09:41 AM   #1049
erin is offline erin  Australia
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Off topic, please forgive me.

I just saw this new DAC on ebay which looks interesting, although only USB input.

TE7022 WM8761 24Bit/96Khz USB DAC Decoder RCA Coaxial Out + USB line | eBay
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Old 5th January 2012, 09:44 AM   #1050
erin is offline erin  Australia
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Quote:
Originally Posted by terranigma View Post
My current setup employs 100nF Ceramic as bypass and 100uF/16v Nichicon PZ as decoupling. This combination smashed my previous favorite Elna SilmicII's.
Would you be kind enough to describe the sonic difference between the SilmicII and the Nichicon PZ ?
Curious. Thanks
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