There were few question regarding the use of the built in speakers as a "center speaker" using the speaker level input. It seems no one doing that based on the lack of answers. I went to BB to see if I could arrange such demo, they will get back to me on that. I've been using dedicated center channel speakers for decades, so I have no illusions about how this Tv might stack up against them, but this hobby is often about compromises, it might just works. Having said that I currently use a special stand that sit on top of my Panasonic plasma tv, which is made of glass and metal with thick bezels for today standards, so I wonder if it would work with this TV, which in turn would eliminate my need to use the built in speakers. BTW I used to had it the obvious front and below the screen arrangement on a floor stand, and I was never satisfied with especially for MCH music reproduction, even when I angled the speaker.
Anyway here is the stand on top my current TV.
De sagittis Hungarorum libera nos, Domine!
Attention, don't read my posts if you're a snowflake or easily offended.