Originally Posted by scirica
Maybe yes, maybe no...It may depend on the installation options or constraints. I'm just asking for some plugs that could be used optionally in certain installs.
I think it's safe to assume the ported speakers are tuned for the ports, and therefore closing them up, without modifying the tune, would be problematic. But you're right, it's not implausible that one could situate the speakers poorly, e.g. inside a cabinet, in a way that would make the downsides of plugged ports pale compared to the downsides of open but terribly situated ports. Since center channel speakers are often situated in subpar placements, it's interesting that they chose to include ports at all, and rear-firing ports at that.
Benq W1070 projector
Da-Lite High-Contrast (gray) Da-Mat screen
Denon X2000 receiver
Focal 700-series towers and center
JMLab Tantal-series bookshelf rears
Rythmik FV15HP sub