Hi, I have a ruark dialogue centre speaker for use with an 8ft projection screen. The wall that they are on is clean and clutter free. what I want to know is, should the speaker be as close to the bottom of the screen as possible or is there any reason why I can't put it on the floor and have it pointing upwards towards the listenening position. Also, rayleigh hifi in chelmsford said I could use two of my existing spare m+k K4 satellites either aide of the screen but wired in mono. I was against this as something just doesn't seem right about having a speaker either side, but he was adamant the sound would be as if it were coming from the whole of the screen centred around the centre line. any thoughts?