I'm not an authority, but I don't accept the premise - or at least not fully. A speaker optimized to produce music must produce vocals too. Indeed, few (none) of us would be happy with a speaker that won't produce vocal music accurately. And, it doesn't seem to me that a speaker that reproduces vocal music would be sub-optimized for spoken word.
That said, I guess we do agonize over our speaker selection considering which models are better for vocals vs various types of instrumentals. So if you're fanatical about the vocal reproduction accuracy for your HT viewing, you may have vocals criteria, but I wouldn't go beyond that if it were me.
That said, I guess we do agonize over our speaker selection considering which models are better for vocals vs various types of instrumentals. So if you're fanatical about the vocal reproduction accuracy for your HT viewing, you may have vocals criteria, but I wouldn't go beyond that if it were me.