The non-metallised WIMA FKP are quite expensive, for the same price there are metallised hi-fi audio caps... there isnt much info around about how they sound in the signal path.
are non-metallised more transparent/accurate than metallised polyproplyenes in the signal path?
Would the specialised audio caps sound better than general purpose WIMA?
are non-metallised more transparent/accurate than metallised polyproplyenes in the signal path?
Would the specialised audio caps sound better than general purpose WIMA?
for 0.47uf even with low voltage, high tolerance they are much more expensive than MKPs on Mouser, they seem to be only available for backorder... might just be some inflation on FKPs for whatever reason.
I should say this is for a fairly good system where changing between different high quality cables and interconnects had dramatic effects on sound, something I never believed in till I heard it. It would be very surprising if the audio signal could pass through something significantly more complex than a piece of copper without any audible difference in this case.
Typically the foil parts have better connections inside where the leads attach, that alone can improve the performance. Some of the best, super duper, expensive audiophile coveted parts are metalized though, so...
I didn’t realize that Wima made a film/foil part bigger than 2uf, datasheet shows 4.7uf now.
I’ve combined a Nichicon Muse 10uf, with a .22uf mkp 10, 630v, for line level coupling, and it worked out well. For power, the fkp1 has worked very well decoupling op amps in dacs.
Wima are a bit of a budget hi-end part, still need to test things out though.
I didn’t realize that Wima made a film/foil part bigger than 2uf, datasheet shows 4.7uf now.
I’ve combined a Nichicon Muse 10uf, with a .22uf mkp 10, 630v, for line level coupling, and it worked out well. For power, the fkp1 has worked very well decoupling op amps in dacs.
Wima are a bit of a budget hi-end part, still need to test things out though.
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It really makes a lot more sense to discuss specific makes, rather than the general effects of design features. Even dielectric type does not appear so important anymore.
There are lots of recommendations for the FKP floating around the net. I have tried them a few times in riaa networks and always found them to sound very average. Perhaps they do sound better than the MKP but this isn't saying much.
If there are budget constraints i'd rather go for the Mundorf MKP.
The internal construction relates to the pulse strength:
Film capacitor - Wikipedia
As pulses usually are very tiny, or don't even exist, in a small signal path, the uppermost type of construction will do. And this one relates to WIMA's MKP4, if we are on PP capacitors. There's absolutely no need to use FKP types here (the lowermost construction in the pic).
Best regards!
Film capacitor - Wikipedia
As pulses usually are very tiny, or don't even exist, in a small signal path, the uppermost type of construction will do. And this one relates to WIMA's MKP4, if we are on PP capacitors. There's absolutely no need to use FKP types here (the lowermost construction in the pic).
Best regards!
Back in the real world dlelectric choice is everything in a capacitor - PP are very low distortion, mylar is significantly less linear. Various factors matter according to the use, but an audio signal path really only cares about distortion, sometimes leakage too.
I'm not saying brand isn't important, its useful to know you are getting what you think you are...
It seems to me (need to see datasheet) that they are not exist in such large nominals.
FKP series are internal series connected, which is done to increase the voltage rating. There are floating electrode carrier films between the films that are connected to the actual leads.
I don't know if this is bad for sound quality, but it seems superfluous if you don't need the voltage rating.
I don't know if this is bad for sound quality, but it seems superfluous if you don't need the voltage rating.
They are all capacitors, with low inductance geometry, all are fine, extra voltage rating costs more money for no advantage (with polypropylene which is very linear at high signal), but no disadvantage (till the capacitor becomes so big it picks up detectable interference from its surroundings via stray capacitance to its outer film!).
With a less linear dielectric extra voltage rating can decrease the distortion, however.