There is something to be said for speaker placement near the floor in general in terms of both reinforcing bass compared to otherwise and minimizing effects of sound reflected from the floor in general. In general, floor reflections add nothing useful to what you hear in regards to the reverberant field and its effect on soundstage and imaging and should be minimized whereas reflections from other room boundaries can and often do.
In some cases, a slight upward tilt in conjunction with placement near the floor may help things out even further.
I've done this recently with a pair of small Triangle monitors in my wife's acoustically challenged and very lively 12X12 sunroom with tile floor and vaulted ceilings (see system pic) using Isoacoustics brand isolating stands to help keep the bass clean and articulate and the results are superlative....teh best ever in that room.
In some cases, a slight upward tilt in conjunction with placement near the floor may help things out even further.
I've done this recently with a pair of small Triangle monitors in my wife's acoustically challenged and very lively 12X12 sunroom with tile floor and vaulted ceilings (see system pic) using Isoacoustics brand isolating stands to help keep the bass clean and articulate and the results are superlative....teh best ever in that room.