is it advisable to put one 24x48x1” acoustic panel behind each summit or should i go smaller and us more than one panel. my summits are 50” from the front wall and 7’ apart and i have electric 108” screen that will go over the panels when lowered. also there’s a window with venetian blinds in between the summits on the front wall should that be covered also? this setup is for music listening only. thanks