cap for adding offset before adc - but which cap in signal path??

thesoundlab · 29th March 2011, 02:59 PM

hey there,

my name is tommy, i'm from germany. i'm new to this community.
i'm building an audio interface (with the AK5394A). there's an evaluation board (take a look at this PDF, page 27) which show some caps in series prior to the last opamp stage (C19, C22, C23, C26). i read some articles about caps in a signal path in series and how strongly they can influence the sound, but i'm really wondering which caps i should use. what do you guys suggest? what would you take? there are so many opinions out there... need some advice.

thanks a lot in advance!
tommy

Face · 30th March 2011, 02:01 AM

Use a high quality electrolytic such as Nichicon FG or MUSE or something from Jensen and you'll be fine.

thesoundlab · 30th March 2011, 05:27 AM

hey face,

thanks for your reply. what would you use for active filter structures? i found some discussions here and thought about using mkp-10s.... what's your favourite?

oncle_tom · 31st March 2011, 03:50 AM

Styroflex, if you got the right values.

Peter

29th March 2011, 02:59 PM	#1
thesoundlab diyAudio Member Join Date: Sep 2010 Location: western germany	cap for adding offset before adc - but which cap in signal path?? hey there, my name is tommy, i'm from germany. i'm new to this community. i'm building an audio interface (with the AK5394A). there's an evaluation board (take a look at this PDF, page 27) which show some caps in series prior to the last opamp stage (C19, C22, C23, C26). i read some articles about caps in a signal path in series and how strongly they can influence the sound, but i'm really wondering which caps i should use. what do you guys suggest? what would you take? there are so many opinions out there... need some advice. thanks a lot in advance! tommy

30th March 2011, 02:01 AM	#2
Face diyAudio Member Join Date: May 2007	Use a high quality electrolytic such as Nichicon FG or MUSE or something from Jensen and you'll be fine. __________________ "He who fights with monsters should look to it that he himself does not become a monster. And when you gaze long into an abyss the abyss also gazes into you." Friedrich Nietzsche

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30th March 2011, 05:27 AM	#3
thesoundlab diyAudio Member Join Date: Sep 2010 Location: western germany	hey face, thanks for your reply. what would you use for active filter structures? i found some discussions here and thought about using mkp-10s.... what's your favourite?

31st March 2011, 03:50 AM	#4
oncle_tom diyAudio Member Join Date: Dec 2005 Location: near frankfurt/main	Styroflex, if you got the right values. Peter