If you evaluate a speaker such as the Gallo 3, keep in mind that it is almost omnipolar throughout the entire bandwidth. This means, that in order to get the proper effect with them:
(1) 4' minimum from back wall
(2) 2' minimum from sidewall
(3) Symmetrical distance/placement for each channel to each wall
(4) Standard rectangular or square room
Note: Dampening of 1st reflections: this type of speaker's impressive sound is in fact largely due to it's use of room reflections as a type of 'constructive' coloration, at least in regards to realistic space/ambience. If you significantly absorb or diffuse the 1st reflections from the side or rear walls, you will kill much of the unique sound effect that this speaker produces.