I think I forgot to mention one thing about the installation of the new elements. The original way they are mounted can not be used with these elements. I used a simple solution, thick glue. Simular to silicone but made for making engine gaskets, it is black so it is not visible and the only problem could be if I want to change the elements again. This stuff is extremely strong and I guess that serious violence is needed if I want to replace the elemntes.

One thing that would be really interesting would be to compare this modification to new/old (but in nice condition) B&O-elements and refoamed elements. I am thinking of refoaming my old ones just for this. But it will always be so many issues to if I got it right and quality of the new foam etc, that this would not prove anything.

New elements would be more interesting, but it would be quite expensive to do this. If I knew anyone with Pentas it would be easier, but most of my friends think that I am an idiot putting money and time in to this. No one I know is interested in this and they think that their systems sounds perfect, systems they have bought from the supermarket or inherited from some relative...

Very interesting discusion, by the way. 🙂 Many issuses could be covered here, and I hope this could be to interest or use to the Penta owners. 

So far, with no deeper analysis, it seems to be a very good modification. I have mostly been using the speakers for radio background listening and some playing while drunk😳 Sounds as always very good for this, they are really impressive when played loud with a good quality CD.

I will do some more serious listening this week.

After listening to the speakers for a while now, I have this conclussion: -I do not really know what I have acomplished😂

To be honest, the difference is not that big when listening to music with good sound quality. I have experienced greater improvements with the capacitor replacement, and changing the OP-amps in the amplifiers. However there seems to be a bigger difference when listening of lower quality of music, that is MP3 and such. The anoying mid range has become "softer" I find myself listening to the same tracks without being anoyed with the sharp penetrating guitars and other sounds in that frequency range.

I am quite sure that this is not due to the level of the elements being lower. When listening to very familiar tracks like Brothers in arms and some Ulf Lundell tracks it really sonds good and the voices and guitars sounds very good as they did before. So far the improvements are, as I said in the listening to MP3 oflower quality, and I really try to avoid these.

I will get back with some more findings!