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Old 10th April 2014, 06:56 PM   #1651
EUVL is offline EUVL  Europe
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MarkLai will supply you PCBs and heatsinks if you tell him what you want precisely.
ONE SEN IV V2 PCB will serve 2 PCM1704 DAC chips.


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Old 11th April 2014, 03:29 AM   #1652
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Quote:
Originally Posted by EUVL View Post
MarkLai will supply you PCBs and heatsinks if you tell him what you want precisely.
ONE SEN IV V2 PCB will serve 2 PCM1704 DAC chips.


Patrick
Thanks Patrick! I have contacted him and now waiting with finger crossed!
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Old 8th May 2014, 08:25 PM   #1653
RollE2k is offline RollE2k  Sweden
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Patrick:
If using around 300-330R i/v resistors would 330uF bipolar electrolytics be enough? And how do i calculate what size i need there? it really becomes a "RC (CR) high pass filter" i take it, but what cutting frequency should i aim for?
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Old 8th May 2014, 10:16 PM   #1654
EUVL is offline EUVL  Europe
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> but what cutting frequency should i aim for ?

As low as possible. At most 15Hz.
So 330 300R is fine.


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Old 8th May 2014, 10:21 PM   #1655
RollE2k is offline RollE2k  Sweden
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Would you recommend bipolar like Muse ES over known good polarised ones like Silmic II?
Because i can fit either ES 330uF (real 165uF) or silmic ii 220uF on my boards...
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Old 8th May 2014, 10:48 PM   #1656
EUVL is offline EUVL  Europe
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It costs you nothing to try both out, right ?
Solder a socket on your PCB and do A-B test, and tell us your findings.

I am using bipolar, and Elna has a bipolar for audio :

http://www.elna.co.jp/en/capacitor/a.../pdf/rbd_e.pdf
ELNA RBD (Bi-polarized) : headfishop.com

The film cap in parallel takes over from ~1kHz onwards.

And remember what I said about Kirchoff's Law in the article.


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Old 12th May 2014, 06:57 AM   #1657
RollE2k is offline RollE2k  Sweden
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I already have 4x Silmic II's so i'll order another 4pcs, and also the 330uF muse es.
I'll parallell them with 2.2uF - so they will actually take in as low as around 250Hz. Don't know yet if the 12.5mm caps will fit my boards. :-)
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Old 12th May 2014, 09:39 AM   #1658
EUVL is offline EUVL  Europe
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I hope you are using MKP or FKP and not MKS for your 2.2F.


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Old 12th May 2014, 12:20 PM   #1659
RollE2k is offline RollE2k  Sweden
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I was thinking about the MKS - are the MKP or FKP better?
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Old 12th May 2014, 03:09 PM   #1660
EUVL is offline EUVL  Europe
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Many many articles by e.g. John Curl or Walt Jung on choice of capacitors.
Just search.


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