Looking for wider soundstage

Try for a smaller triangle and remember, the triangle is just a starting place. My speakers are 8’ apart, center to center and my listening position is about 9’ from the speakers. Also, see what you can do about the couch. Most speakers need room all around them and close to the same amount for both.

BTW, I have the same doorway as you do, but I don’t have a door, so it’s sometimes very annoying. I bought one of those adjustable room dividers and hang a comforter on it when I want to be picky.

All the best.

JD

I have the same issue with the same cause.

Speakers do need space around them. My left speaker is in a corner and my soundstage is skewed to the right. You might try moving that couch if possible. But definitely move both speakers more not the room.

And a huge upgrade is to install Townshend Seismic Podiums under your speakers. The amazing amount of better performance they give will fill in the soundstage and offer a bigger improvement to your system than anything!

Thanks for those recent suggestions. I will try them. 

In my opinion,from my experience, if you’re going to have a rack in the center, pull the speakers well out in front of the rack.  I have a much smaller room,with rack in the center.  I have achieved a wonderful soundstage. Can it be better?  I think there is always room for improvement.   
  If your wife has an issue with leaving the speakers out,move them back when not doing any critical listening.  Enjoy the journey. 

@ backdoor-

I know it may seem counter intuitive but have you considered rotating the "audio" components of your system to the shorter wall where the display is currently located? (Assuming that I'm understanding the dimensions you provided).