different sized Jantzen caps

[ozorfis]

Just in case somebody wonders about different sized Jantzen caps. There seems to have been a design revision for der MKP-Z series caps.

This was mentioned earlier in a closed thread:
https://www.diyaudio.com/forums/parts/332870-fake-jantzen-caps-hifi-collective-2.html

And I ran across the same issue now with Alumen-Z caps (see pic attached). I do believe they are original parts. But it erodes a bit the trust, when not even the dealer is informed about such changes. I am an engineer and have some experience with such "optimizations" myself. There should always be a customer info explaining the changes, when they are made.

 

[ozorfis]

I got a super fast reply from Jantzen, which is great customer service.

They say in case of the Alumen-Z the smaller version is the older one before it got the aluminum casing. So it is possible to have different sizes, but the content should be the same be it smaller or bigger than the first revision.

 

[Lewart]

I recently bought some silver z caps and they are the usual size still. Maybe the changes are not to entire line of products. Have the alumen caps changed sonic signature? - thinner foils obviously.

 

[ozorfis]

Haven´t tested them yet. But I will compare them and let you know.

 

[ozorfis]

I have tested the Alumen-Z alongside the 6.8uF version and some Duelund bypass caps in my front and center speakers. To me the small and big version sound equally awesome.

They replaced Solen MKPs in my crossover and it was a worthwhile investment.