Looking for input: Best material for mid range cone


I had a surprise last night when I switched speakers in my system.  I've got a few pairs, but had been listening mainly to some Ascend Sierra 1, which have a polypropylene cone with a soft dome tweeter in a bookshelf design.  Anyway, I've got a pair of Tannoy Precision 6.1's, and swapped them in.  

The sound was noticeably different.  Piano sounded better, vocals had a finer quality as well, and the whole sound seemed a little more lively.  Now the Tannoys have silver interior wiring, a titanium tweeter in a coax design and are only rated for 75 watts. The cone material is some kind of pressed paper fibre.  And they are voiced to somewhat push the midrange.  But the sound was compelling.

I'm just wondering about cone material because some old Paradigms with Polypropylene were really not up to snuff, but they were quite old.  Any thoughts?
213runnin

Showing 2 responses by 213runnin

Thanks for the comments, my own experience is somewhat limited.  Paper does seem to be quite nice when done right.
It’s so interesting to read the varying thoughts on this topic. My issue is not the frequency range that poly can reproduce, but what it sounds like while doing so.

The Tannoy Precision bookshelfs I found so enjoyable have the tweeter crossed over at 1600 Hz, which is much lower than the Sierras. Perhaps that also has something to do with it?

I suppose there are no absolutes in speaker design, except that opinions will differ!