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Joseph Audio Pearl 3 to 20/20 Graphene Upgrade

Has anyone upgraded their Pearl 3 to the 20/20 Graphene version or A/B'ed them back to back? Looks like it's a mid-range driver upgrade along with tweaks to the crossover, I'm wondering what this upgrade yields sonically and how large/small of a difference it is. Thanks.
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chorus
976 posts
 
I was told by a nationally recognized speaker designer that graphene
coatings are  being employed to strengthen the cone more than for
any real sonic benefit. Now getting anyone to admit that will be a challenge.
Maybe Spatial Audio's owner ? Clayton 
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