I'd start with what @gs5556 suggests especially as you want to deal with the floor reflections as well (you also need rugs between the speakers and your listening position)
However in addition you can also try decoupling the speakers from your floor via a Townshend podium or other spring or roller/slider based solution such as Herbies
http://herbiesaudiolab.net/spkrfeet.htm#cone
However in addition you can also try decoupling the speakers from your floor via a Townshend podium or other spring or roller/slider based solution such as Herbies
http://herbiesaudiolab.net/spkrfeet.htm#cone