Steve Dallas
Major Contributor
Can also try Focal's smaller front ported speakers. Maybe smaller speakers with less bass will be more suitable.
I tested this theory a few years ago. I found no significant difference in in-room bass response between front ported Revel F206 towers and rear ported Philharmonic BMR large standmounters as long as the BMR's rear ports were farther than 2-3" from the front wall. This is another audiophile myth, I'm afraid.
The actual difference is the greater ability to hear port chuffing and resonances in front ported speakers in some instances.