DAC 2496 (AK4393) DAC KIT With CS8416+AK4393+5532 - Page 109 - diyAudio
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Old 20th January 2012, 11:12 PM   #1081
50AE is offline 50AE  Bulgaria
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I have the orange caps as well.
I guess I'll love a similair answer.

I'm currently drawing a sketch for my DAC enclosure. It will be lampized and it will have two valves actually - a rectifying and the amplifying one. I will share results later.
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Old 20th January 2012, 11:24 PM   #1082
F1 FAN is offline F1 FAN  Canada
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I received those orange .1uf's with my kit as well but I substituded them with Panasonic V series stacked films.
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Old 21st January 2012, 12:35 AM   #1083
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The upgrade BOM still apply, simply swap the remaining with ceramics...
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Old 21st January 2012, 03:22 PM   #1084
10y is offline 10y  Italy
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Hi,

I'm populating this dac board following the Clave BOM.

Regarding the 10 uF 50V Roa Cerafine can I substitute these

caps with a similar 10 uF 50 V elna silmic II or with a 47 uF 25V

roa cerafine, found on my spare parts box?


Thanks for suggestions,

Ciao

Anto
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Old 21st January 2012, 03:37 PM   #1085
erin is offline erin  Australia
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I think you could do that without trouble.
The BOM is just a suggestion, although it is a suggestion which is "guaranteed" to give good sound. Deviating from the BOM is entirely fine.

People may "tune" the sound of the DAC for their own systems. As long as you are prepared to experiment and swap over parts if you are not getting the sound you want, then you are on the right track.
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Old 21st January 2012, 03:41 PM   #1086
erin is offline erin  Australia
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Quote:
Originally Posted by j baldam View Post
Has anyone any thoughts about these caps, whether they should stay or be replaced with Wimas.
cheers
I'm not sure what those orange caps are, but, they look to be of a large physical size for a 100nf capacitor. This indicates that they may actually be a good quality capacitor. If you don't have any complaints I'd be tempted to leave them installed.

If you do want to try swapping them out, only do two at a time on one chip, leave it a day or two, and see if you like the difference.

As a side note, in another audio device I have, there was a strange green capacitor which looked a lot like those orange caps, I swapped it out for another very good quality capacitor, but the original green cap sounded best, so the unknown (manufacturer and type) green cap went back in.

Last edited by erin; 21st January 2012 at 03:46 PM.
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Old 21st January 2012, 04:42 PM   #1087
NebuK is offline NebuK  Germany
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Hey,

just finished my two DAC boards with the reichelt.de, i'm really really astonished, although a good long listening session will have to show details .

What i'm wondering about is that my 7812 get really warm. Even with the overdimensional heatsinks i've bought accidentally its ... 50*C-75*C i'd say (taking 60*C as the point where your finger starts emitting slight pain signals). Does it get warm for you too? I must admit that my transformer is a little big with 15-0-15V (i've got 17v out idle, probably quite a bit more after rect/cap).

Thanks and Regards
- NebuK
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Old 21st January 2012, 04:50 PM   #1088
pchw is offline pchw  United States
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A month or so ago I came across an ebay seller (from Hong Kong) who sold the identical red caps. They were advertised as metalized polyester.
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Old 21st January 2012, 04:58 PM   #1089
pchw is offline pchw  United States
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If you measure 17VAC, then the 7812 will be dropping something like 11VDC. That's a lot of heat. The caps near it will not be too happy at this temp. How about the 7912?
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Old 21st January 2012, 05:03 PM   #1090
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Quote:
Originally Posted by erin View Post
I'm not sure what those orange caps are, but, they look to be of a large physical size for a 100nf capacitor. This indicates that they may actually be a good quality capacitor. If you don't have any complaints I'd be tempted to leave them installed.
Hi Yes I'm very happy with the sound now it's running in.
I am tempted to leave them expecting that the maker knew what he was doing fitting them. Looking on Ebay they look a bit like philips.
Having said that I would like to change caps around the opamp. As I have settled on an op amp. lm4562. Just a touch fat in the bass but ideal everywhere else.
Could someone please give a recommendation for the opamp caps.

There are posts about it getting warm but my supplied built one runs cool.
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