Of course there’s a big difference. With the Heresy’s on the floor, the entire sound stage and everything is no higher than your knees. Mid-bass was also heavy, mushy and thumpy. I never intended to keep them on the floor anyway. I always planned on putting them up on stands.
Having them up at ear level makes everything about the Heresy’s better. The little tables that I’m using currently as stands actually places the mids right at ear level. Mid-bass, midrange and treble is even, natural and smooth, they produce a rather wide and deep sound stage with surprisingly good imaging (though people always say horns don’t image well).
The front baffles are roughly out 4’ from the front wall and about 2.25’ from the side walls. The Polk subs are getting their signal via Wireworld bi-wire Oasis 7 speaker cables fed from the Schiit Aegir amps which sounds a whole heck of a lot better than via interconnects. It makes these subs sound and perform so much better than I ever expected them to. I have a pair of JL Audio e-110 subs sitting in the closet because these old inexpensive Polk subs actually perform better! They are crossed over around 70 Hz and the Heresy’s are receiving full signal via Audioquest CV-8 cables.