Paper Cones in HiFi?


I may be naive or uninformed but I've noticed several speaker mfrs using paper cones in speakers priced over $2k (ie Vienna Acoustics Bach and Sonus Faber Grand Piano). I always thought paper cones were for low end Radio Shack speakers.

Can some please educate me.

Thanks.
alivadariu
Should the cone move in phase to the input signal over entire surface in the band pass ?

IF not, what would you call that out of phase output ?
There is of course a nice laser tool to see what is happening ( or not )…

and of course listening..  but some people like the flavorizer called…. Distortion
Bose uses something similar, I think. 

Silk dome midrange cones and tweeters may sound "too warm" when playing a sharp-sounding beat or female vocals that peak.
  but some people like the flavorizer called…. Distortion


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its out there and most folks don't know it.
Magesium may be the most neutral voicing material for midwoofers.