DAC 2496 (AK4393) DAC KIT With CS8416+AK4393+5532 - Page 19 - diyAudio
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Old 11th June 2011, 06:47 PM   #181
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Quote:
Originally Posted by falio View Post
1- direct coupling with output capacitor as Terranigma suggest us (please wich type, value and location in the schema)
I had already did it:

DAC 2496 (AK4393) DAC KIT With CS8416+AK4393+5532

You can use mkp, mkt, paper-in-oil type nonpolar caps here.

Off topic, I had very good results with axial tantalums as dc blocking also. Since they are polarised caps, you have to connect positive leg onto dac side. Just worth to try.
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Old 15th June 2011, 12:52 AM   #182
F1 FAN is offline F1 FAN  Canada
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Good looking dac for the money,I plan to buy one to experiment with.Is there any indication of counterfit parts being used from the different vendors?
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Old 16th June 2011, 10:50 AM   #183
stifa is offline stifa  Yugoslavia
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@CLAVE Regarding those Wima FKP2 caps that go around the opamp and in the filter...

I have soldered them but dont know if their polarity matters...just soldered them on the board, wasnt looking...? Do they even have polarity?

cheers
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Old 16th June 2011, 12:22 PM   #184
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Originally Posted by stifa View Post
I have soldered them but dont know if their polarity matters...just soldered them on the board, wasnt looking...? Do they even have polarity?
As all film caps FKP2s don't have polarity.

Though there could be a direction that is better sounding...

Usually I don't care about it...
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Old 16th June 2011, 12:51 PM   #185
F1 FAN is offline F1 FAN  Canada
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Do the kits come with the SMD IC's already soldered in place?
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Old 16th June 2011, 02:47 PM   #186
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Originally Posted by F1 FAN View Post
Do the kits come with the SMD IC's already soldered in place?
It depends from the vendor, but usually yes.
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Old 16th June 2011, 07:45 PM   #187
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It depends from the vendor, but usually yes.
OK thanks Clave.
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Old 16th June 2011, 10:36 PM   #188
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Finally all caps, resistors and sockets I was waiting arrived...

This night I've socketed all resistors and remaining caps

In the next day I'll do some other tests
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Old 20th June 2011, 06:19 PM   #189
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Because of the positive posts here I bought one of these DACs with a AK4396 on it. After having changed the opamp to various types I settled with LME49860. While I am still experimenting with it I can remark a few things:

- it really needs a heatsink on the 7812 when the original R core transformer is used. BTW the R core is absolutely quiet, very nice quality !

- it needs a 100 Ohm resistor at each of the L + R outputs of the opamps to the RCA sockets

- my 2 different FN1242A (Fluency) DACs eat it for breakfast in terms of quality but they are more noisy.

I have the feeling CS4397/98 DACs are also somewhat better than these chips but unfortunately I haven't kept one of those so I can not compare. Maybe I will try this DAC again with transformer output boards as I have one of those left.
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Old 20th June 2011, 10:30 PM   #190
YohY is offline YohY  United Kingdom
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FN1242A (Fluency) DACs eat it for breakfast in terms of quality but they are more noisy. .
When you say 'Noisy', do you mean in terms of noise floor level ?
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