Speakers on a cabinet .. open to suggestions..

So…the current speakers sit in a 40” high cabinet..

There are acoustic panels behind them.  They are  14” from the back wall and about 3 feet from any sidewalls. The room is 21 feet wide, 19 feet deep, 10 foot ceilings..

Behind the main listening area the room is open to the kitchen.

I realize this is considered a very compromised setup, but it’s what I’ve got to work with.

Current speakers are Fritz Carrera B with the rear port plugged.  They are great speakers.  Just curious about anyone’s experience/ recommendations regarding this setup. A rear ported speaker, the port being plugged (too boomy without, and I use a single node DSP for a room node at 60hz) is not ideal so I’m open to speaker    Suggestions.  Not unhappy, just curious about opinions .

Solid state Mac mini->D-link router with LPS-> blue jeans Ethernet to ether regen-> optical out to optical Rendu (the ether regen and optical rendu are attached to a crespi LPS from uptone audio)-> audioquest Diamond USB -> Mojo Audio EVO B4B-> art audio balanced inner connect (the Rhodium ones)-> Pass Labs XP-20-> same art audio inner connect-> Pass Labs 150’.8-> art audio speaker cables-> Fritz Carrera B on iso-pucks..also an REL G-2 sub..