Ok all -- I have a theatre in a box set up right now -- the receiver is a Sony str-k7000.... I just got an incredible deal on 2 Genesis (g-2815) Tower speakers.... I am pretty sure my receiver is only a 6 ohms output(or whatever you'd call it)... and I know the speakers are 8ohm speakers... I connected them and as I imagined it doesnt sound as good as I think they should -- and no bass really at all... Do I have to get an 8 ohm receiver to make the speakers work to their full potential? and how big of a difference will I notice? Thank you!