Angst0,
Are your speakers exposed to sunlight from a window or skylight? It could be that the Kevlar broke down 'chemically' due to exposure...just a WAG.
Kevlar does have a 'honk' as some critics have described it.
It was used for it's great strength to weight ratio...personally, I do hear the coloration somewhat.
In the THIEL CS5, Jim's best work (I haven't spent time with the 3.7 which gets raves) he used a Kevlar midrange, but I didn't hear the same coloration. Of course he was using it across wide bandwidth, at 6db per octave it would have seemed to show any weakness in the frequency extremes, EXCEPT for the fact that there were so many drivers, 1 Tweet, 1 Dome, 1Kevlar, and then three paper woofs,(or composite, damn I'm so old I forget things like this too easily). They may have been a plastic coated, paper, OR maybe a poly.
Again, didn't hear that 'honk'.
BTW, the sunlight thing...is that a possibility?
Larry
Are your speakers exposed to sunlight from a window or skylight? It could be that the Kevlar broke down 'chemically' due to exposure...just a WAG.
Kevlar does have a 'honk' as some critics have described it.
It was used for it's great strength to weight ratio...personally, I do hear the coloration somewhat.
In the THIEL CS5, Jim's best work (I haven't spent time with the 3.7 which gets raves) he used a Kevlar midrange, but I didn't hear the same coloration. Of course he was using it across wide bandwidth, at 6db per octave it would have seemed to show any weakness in the frequency extremes, EXCEPT for the fact that there were so many drivers, 1 Tweet, 1 Dome, 1Kevlar, and then three paper woofs,(or composite, damn I'm so old I forget things like this too easily). They may have been a plastic coated, paper, OR maybe a poly.
Again, didn't hear that 'honk'.
BTW, the sunlight thing...is that a possibility?
Larry