di naman sya magiging "maingay" tingnan. pwede naman dual function ang stand. mukha kasi syang kawawa na naiwan lang sa sahig. 
aside from that sa palagay ko nababawasan ang clarity ng voice since gagapang pa sa sahig. ganito, try mong ipatong temporarily just below the screen then hear the difference. pag ok lang syo either way then solve ka na. 
I always thought that temporary lang ang pagpatong ng center sa sahig.
It's a very bad idea to put the center speaker on the floor. Firstly, the tweeter should ideally be at around ear height. Secondly, you get "speaker boundary interference" from the proximity to the floor, which results in an uneven frequency response. Thirdly, dami alikabok sa sahig!
It's an absolute necessity to mount the center speaker on a stand, preferably so that the tweeter is at ear height. Otherwise, tilt the speaker slightly upwards so that the tweeter points at the ears.
