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WIMA MKP 4 and MKP 10
WIMA MKP 4 and MKP 10
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Old 2nd September 2010, 03:14 PM   #1
panson_hk is offline panson_hk  Hong Kong
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Default WIMA MKP 4 and MKP 10

Which one is better?
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Old 2nd September 2010, 03:36 PM   #2
SY is offline SY  United States
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WIMA MKP 4 and MKP 10
For what?
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Old 2nd September 2010, 03:44 PM   #3
panson_hk is offline panson_hk  Hong Kong
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Quote:
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For what?
for 1, supply decoupling; 2, DC blocking in signal path.
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Old 2nd September 2010, 03:48 PM   #4
SY is offline SY  United States
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WIMA MKP 4 and MKP 10
Depends. Do you want lowest ESR? That can be a problem with some supplies. Lowest DF? Ditto. Smallest package size? That can be useful in some designs, but the tradeoffs may work against you in others.

The datasheets are on Wima's site and bear looking at. That way, you can decide what represents the best tradeoff for your design goals.

http://www.wima.com/EN/WIMA_MKP_4.pdf
http://www.wima.com/EN/WIMA_MKP_10.pdf
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Old 2nd September 2010, 11:05 PM   #5
StefanAC is offline StefanAC  Germany
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For DC blocking in the signal path, I like the MKP10. I used them on several of my no oversampling Philips CDPs and preferred them over some far more expensive models (different Audyn Caps, Mundorf MCaps etc.).

The only problem with them is their size – they are huge! And it can be quite difficult to buy them in larger values.

An interesting comparison can be found on the following website:

Humble Homemade Hifi

Best regards,

StefanAC
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Old 3rd September 2010, 07:00 AM   #6
panson_hk is offline panson_hk  Hong Kong
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Thank you for the link.
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Old 3rd September 2010, 07:34 AM   #7
panson_hk is offline panson_hk  Hong Kong
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Hi StefanAC,

Do you know where the caps are used by the author for listening evaluation. I thing placing the cap in rails decoupling or DC blocking in signal path may lead to different result. DC blocking in signal path may have larger impact to sonic performance?
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Old 3rd September 2010, 08:40 AM   #8
jacco vermeulen is offline jacco vermeulen  Netherlands
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Quote:
Originally Posted by StefanAC View Post
The only problem
Be aware that there's a difference of construction between old and new production of the same type series, not only the outer shape.
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Old 3rd September 2010, 10:34 AM   #9
AndrewT is offline AndrewT  Scotland
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I wonder if using the low ESR of MKP as decoupling may increase the risk of ringing on the supply rails?

I would be tempted to compare lossy ceramics and the slightly higher ESR of MKS/MKT for decoupling purposes.

For DC blocking of Audio signal the better the MKP/FKP, the better the reports we hear about sound quality.
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Old 3rd September 2010, 11:51 AM   #10
Salas is offline Salas  Greece
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WIMA MKP 4 and MKP 10
I had MKP 10 over 15.000uF LCR PSU caps in my old lateral Mosfet JLH 100W amp. When I made a restoration, I pulled them out and the amp became subjectively more coherent in the treble, by a good margin. Andrew is right, we must know we don't upset an amp that has been designed with lossy filter caps when making additions.
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