Doesn't really have anything to do with soundstage.

The purpose of the port is to filter low frequencies into the room, I don't see based on the picture how that will be accomplished. I would still consider calling Axiom to see the status of your order and get a second opinion. I think if they were aware of your situation, they might recommend another speaker.

M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85