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tom1356 27th October 2003 07:28 PM

Mundorf Silver POI caps orientation
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Is there a prefered method of instalation with regard to lead polarity when used as coupling caps in a pair of Billie amps?

Peter Daniel 27th October 2003 08:03 PM

Usually the caps of such quality are marked with respect to the outer foil. There are some methods to find the outer foil and here you can read it how to check orientation: and further, check the comments by jcarr.

I always pay attention to caps orientation when coupling and IME they usually sound best when outer foil is directed to the output. Both polarities will sound substantially different.

tom1356 29th October 2003 07:06 PM

Thanks Peter. These dont seem to be marked in any obvious way.

I checked them and installed them last night. So far so good.

matejS 25th August 2007 07:44 AM


Originally posted by tom1356
Thanks Peter. These dont seem to be marked in any obvious way.

I checked them and installed them last night. So far so good.


I've jsut received them and have the same question about the orientation. Since they do allthe caps in using same procedure, I would kindly ask you to tell me the result of your research: orientation of mundorf solver/oil caps.


MRupp 25th August 2007 04:15 PM

This type of cap actually consists of 2 caps in series, same as ERO KP1832, Arcotronics KP 1.72, and probably some other caps used for "pulse applications". As such it should be absolutely symmetrical, i.e. with two outer foils and an "inner foil" that bridges the two.

slowikpl 30th March 2016 10:39 PM

I have tested Oscilloscope on Mundorfs and others:

M- Cap Supreme Silver-oil All 14 pcs of different badge production All ware : opposite ( f- in name Mundorf on capacitor is the inner foil) Outer foil is where Mundorf start.

Those ware the same of All my Mundorfs 20 Pcs silver oil / silver Gold and Silver Gold Oil. Of different production periods from 2010 till 2014!

Duelund VSF and Duelund Cast 100v ware where the D- from Duelund starts the innermost foil. The last d letter from Duelund is the outermost foil.

Jantzen Audio Superior Z-Cap inner foil is as Duelund case. So innerfoi is on the side where J- from word Janzen starts.

Intertechnik Audyn True Copper Cap MKP 630VDC – this cap was the only one that was different story. 4 pcs ware the came case as Jantzen and Duelund. And 2 pcs ware the opposite direction. This was all folks. I hoop it will help you.

DF96 31st March 2016 10:45 AM

To reduce pickup of hum/noise you connect the outer foil to the lowest impedance end. In most cases this is the source end e.g. the previous anode. In any case the difference in orientation will be small, unless the cap has the wrong value.

dazzz 4th April 2016 02:35 PM

in the mundorf MCap® SUPREME
the shorter lead also indicates the capacitor's outer foil.

Bare 10th April 2016 03:59 AM

Erm Try and see :-) IF you can't discern any Audible replicable difference then .. Just Maybe.. it's Irrelevant ??

beardman 10th April 2016 06:46 AM


On my Rike Qcaps 5,6uf, it is easy to hear the difference ,only one direktion sound best

on my mundorf i can not hear the difference,,tried with supreme and silver in oil

Best Bjarne

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