I saw no mention of outriggers. Having had speakers with a downfiring port, I don't know how you can optimize the downfiring gap on carpet without outriggers.
OTOH, the only thing that fixes is bass extension and the tonal balance that goes with it. If you have other problems consistently through all the changes you've made (cabling, component swapping, location, etc.) then these speakers are simply not for you.
OTOH, the only thing that fixes is bass extension and the tonal balance that goes with it. If you have other problems consistently through all the changes you've made (cabling, component swapping, location, etc.) then these speakers are simply not for you.