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Old 15th October 2003, 09:16 PM   #11
ManUtd is offline ManUtd  Norway
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Quote:
Originally posted by A'af
What do you mean manutd, upgrade with the same chip doesn't result anything, if you wanna make difference try give that chip a better power supply and wanna make a little extereme, power your DAC with battery, make a big leap change.

Reason why i say "upgrade" is because CS8412 is defective
and then i thought it could be upgraded at same time.

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Old 15th October 2003, 11:32 PM   #12
Cobra2 is offline Cobra2  Norway
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Default The CS8412 is ok...

But if you want to "upgrade"/tweak; a separate psu, and a modified loopfilter may help.
(Search 8412 + loopfilter...)

Arne K
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Old 16th October 2003, 09:26 AM   #13
OliverD is offline OliverD  Germany
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I can supply CS8412 if you need one. Send me email. Those chips aren't exactly cheap, though.
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Old 16th October 2003, 09:31 AM   #14
ManUtd is offline ManUtd  Norway
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Quote:
Originally posted by AMT-freak
I can supply CS8412 if you need one. Send me email. Those chips aren't exactly cheap, though.

Thanks,but i can have some here and they cost approx. 12

ManUtd.
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Old 16th October 2003, 10:22 AM   #15
UrSv is offline UrSv  Sweden
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AMT-Freak, I am in need for 1 ore more. Quantity and price?

Thanks,
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Old 16th October 2003, 10:33 AM   #16
OliverD is offline OliverD  Germany
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16.20 + shipping.

I'm just processing a group buy and shipping parts this week anyway, so if you send me your address, I can ship this week.
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Old 16th October 2003, 11:01 AM   #17
UrSv is offline UrSv  Sweden
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OK, I'm in. I'll have 2 of them. You have e-mail.
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Old 8th April 2004, 09:50 PM   #18
Oli is offline Oli  United Kingdom
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Default Which type of cap for 8412 loopfilter

I have been looking at the loopfilter of the CS8412- Currently I am using the Wildmonkeysects arrangement- 3300pF between filt and Agnd, 220nF and 470R in parallel to the 3300pF cap.

I am using polyesters in my lash-up, but wonder if I could do better...

My problem is finding suitable small quality capacitors in these sizes:

Ceramic- Small but microphonic?

Polypropylene- too big, hence too inductive?

Polyester - too lossy at?

Which do I choose?
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Old 8th April 2004, 10:07 PM   #19
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220 nF MKT ( polyester ) for size reasons and because they suffice and the 3.3 nF polystyrene ( tad too big ) or MKT ( for size again ). MKP's are too big to use here ( too long wires ).
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Old 8th April 2004, 10:23 PM   #20
Oli is offline Oli  United Kingdom
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Default Excellent- Just the sort of reply I wanted - Cheers

Excellent- Just the sort of reply I wanted - Cheers

How about this one for the 220nF polyester:

Wima MKS 02

And for the 3300pF...

LCR EXFS

Seem appropriate?

P.S. I thought polystyrenes weren't great at r.f. Did I think wrong?
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