Pass amps with Elna Silmic2s? any freq alteration? - Page 2 - diyAudio
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Old 14th December 2012, 06:06 PM   #11
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Quote:
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but nelson why polystyrene is not being used in bigger values?
Try to buy one and you will see why.

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Old 14th December 2012, 06:39 PM   #12
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If we can fine one then is it the best what one can get?
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Old 14th December 2012, 06:54 PM   #13
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just put 10-100nF MKC in bypass and stop harassing your self

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Old 15th December 2012, 03:05 AM   #14
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just put 10-100nF MKC in bypass and stop harassing your self

Not so easy to find :-(
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Old 15th December 2012, 08:02 AM   #15
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then start turning right stones
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Old 15th December 2012, 10:07 AM   #16
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Probably they are called differently outside of Europe, MKC is a designation used by Wima (as well as Röderstein and Siemens I believe) for a capacitor with polycarbonate dielectric. Wima does not make them any more ( WIMA ) so you will need to find some NOS.

Maybe FKC would be usable too:
http://en.wikipedia.org/wiki/Film_ca...ilm_capacitors

Last edited by gk7; 15th December 2012 at 10:11 AM.
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Old 15th December 2012, 10:27 AM   #17
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yup - polycarbonat

MKC preffered , but FKC are good too

M means metalized foil (isolator foil is base for electrode layer)

F means pure foil , meaning separate foils for dielectric and electrodes
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Old 15th December 2012, 11:30 AM   #18
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As far as affordable 1nF to 15nF values caps, are concerned, I've had very excellent results with Wima FKP2 series (polypropylene film & foil). Available from Mouser, here in the states.
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Old 16th December 2012, 01:27 PM   #19
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I hate Silmic IIs. Have used them in the feedback position of amps, and DC input blocking caps in several projects over the years - in each case they 'softened' the sound in a way that made the music bland and strangely uninvolving for me. Really cannot understand why they're so popular - much prefer the Cerafines. Each to his/her own though
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Old 16th December 2012, 03:29 PM   #20
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john M at inputstage they really soften the sound but at decoupling remember to reduce the value to too low like take 22uf or 10uf you will find the difference better.

I believe elnas strategy was most of the amps were sounding harsh and irritating so they gave higher dosage so I think they suit well for rough amps not as smooth as good highend amps...

But i think its all about cooking use the right volume of caps you will settle back at one stage... but still its matter of taste...

at the first i used them and found its very good now adapted but not satisfied but when i revert back to old now cant live without the silmics but now decided to use smaller values at decoupling stage but one word it will remove the spark in the sound... like in playing guitar the higher notes will never be crispier...
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