the aperion built in subs are connected to the left and right output of the 970. i'm leaning to setting them up as large so they would get a full range signal, but not as L+R+Sub which I believe would give the power towers a full range signal + feed them the Sub signal also. my power tower can play down to 30hz, while my dedicated sub can drop down to 25hz. knowing this do you think you would leave them as full range, or would you also feed the power towers the sub signal also (L+R+Sub). Since the power towers go down to 30hz, i don't want to waste that. Usually, in the Left and Right Signal, is there a lot of frequency in that 30hz range? What do you think?