DAC 2496 (AK4393) DAC KIT With CS8416+AK4393+5532 - Page 182

ClaveFremen · 29th May 2012, 09:06 AM

Quote:

Originally Posted by apoo

I´ve lost my orientation in this huge topic..

Can somebody tell me where i can find the post with the link with the BOM

Hi apoo,

you can find my upgrade BOM, together with other relevant files, here.

ClaveFremen · 29th May 2012, 09:13 AM

Quote:

Originally Posted by nphil

I just used the 0.22uF Wima MKS2s instead of the orange Chinese 0.1uF caps, on either side of the op-amp. The logic for using 0.22uF MKS2s was as following...

Those 'Chinese' caps are actually Korean ones made by Pilkor (ex Philips Korea) and they're not so bad.

BTW I recommend good quality electrolythics (47uF) in those positions.

50AE · 10:45 AM

News from mee! I've almost finished the external power supply! Here are the extras

-Separate heater transformer
-Much better grounding, center tap for the heaters, beter cable paths, twisting
-Attenuator for the DAC (not done yet)
-New output caps (RIFA PME271M)

There is more to be done on the outside, it's just a matter of money and time

Pic 1

Pic 2

Pic 3

Pic 4

Pic 5

Pic 6

Pic 7

Pic 8

atupi · 29th May 2012, 03:23 PM

[QUOTE=bcmbob;3013882]Attachment 280903

Attachment 280904

Attachment 280905

No, I'm not that good. Shown after clean and polish.
Attachment 280906

Bob, i see one elcap close to the buffer opamp is damaged, top part is roundish.

bcmbob · 05:12 PM

atupi - Good Eye. The DAC is working great but I'll replace it (probablly both) on my next to-do list. I used all the parts from a build I messed up on a new PCB so I feel lucky it's working at all.

I use double sided carpet tape for sorting parts and will avoid placing them upside down in the future. Could have been the cause.

20120423_171649 (1).jpg

Only thing I couldn't salvage were the LEDs. Popped in some Radio Shack generics.

BTW, Should get this package today. Bought it to compare the WM8741 to the AK4396

Nosian · 29th May 2012, 07:10 PM

does any one have a good and simple circuit for the 3.3 and 5v rails? if Dario had something on mind?

fulvio · 29th May 2012, 08:03 PM

Nosian, I've just finished a power supply with four TL431 shunt regulators (+12V, -12V, +3.3V, +5V); it works.
The +20VA, -20VA, +20VA2, +12VD, -12VD come from a separate PSU, with two separate transformers and big filter capacitors.

Fulvio

Nosian · 29th May 2012, 08:15 PM

thanx you nice Italian. I loved the Nina Zilli's performance in eurovision on Saturday. cheers.

merlin2069er · 29th May 2012, 08:34 PM

I'm using a couple of super teddy regs for 3.3v + 5v...

TeddyPardo

Nosian · 29th May 2012, 08:51 PM

thanx Merlin i wish i could robb a bank!

29th May 2012, 10:37 AM	#1813
50AE diyAudio Member Join Date: Jul 2011 Location: Sofia, Bulgaria	News from mee! I've almost finished the external power supply! Here are the extras -Separate heater transformer -Much better grounding, center tap for the heaters, beter cable paths, twisting -Attenuator for the DAC (not done yet) -New output caps (RIFA PME271M) There is more to be done on the outside, it's just a matter of money and time Pic 1 Pic 2 Pic 3 Pic 4 Pic 5 Pic 6 Pic 7 Pic 8 Last edited by 50AE; 29th May 2012 at 10:45 AM.

29th May 2012, 05:04 PM	#1815
bcmbob diyAudio Member Join Date: Dec 2009 Location: Bay City, Michigan	atupi - Good Eye. The DAC is working great but I'll replace it (probablly both) on my next to-do list. I used all the parts from a build I messed up on a new PCB so I feel lucky it's working at all. I use double sided carpet tape for sorting parts and will avoid placing them upside down in the future. Could have been the cause. 20120423_171649 (1).jpg Only thing I couldn't salvage were the LEDs. Popped in some Radio Shack generics. BTW, Should get this package today. Bought it to compare the WM8741 to the AK4396 __________________ Bob M. "Arrange Whatever Pieces Come Your Way." Last edited by bcmbob; 29th May 2012 at 05:12 PM.

29th May 2012, 08:34 PM	#1819
merlin2069er diyAudio Member Join Date: Sep 2008 Location: Toronto	I'm using a couple of super teddy regs for 3.3v + 5v... TeddyPardo __________________ F5 / B1 / dcb1 / AK4396 Dac / Monica Dac / ezDac / Dynaco ST 35 / jFet BOZ / Lightspeed attenuator

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29th May 2012, 03:23 PM	#1814
atupi diyAudio Member Join Date: Oct 2010 Location: Bucharest	[QUOTE=bcmbob;3013882]Attachment 280903 Attachment 280904 Attachment 280905 No, I'm not that good. Shown after clean and polish. Attachment 280906 Bob, i see one elcap close to the buffer opamp is damaged, top part is roundish.

29th May 2012, 07:10 PM	#1816
Nosian diyAudio Member Join Date: Jun 2011	does any one have a good and simple circuit for the 3.3 and 5v rails? if Dario had something on mind?

29th May 2012, 08:15 PM	#1818
Nosian diyAudio Member Join Date: Jun 2011	thanx you nice Italian. I loved the Nina Zilli's performance in eurovision on Saturday. cheers.

29th May 2012, 08:51 PM	#1820
Nosian diyAudio Member Join Date: Jun 2011	thanx Merlin i wish i could robb a bank!

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