have klf 10 and rc3ii center played with eq got them to sound and perform similar is this ok or should i try to get a klf c7 powering with a yamie htr 5990 have another problem have echo when watching movie on tv speakers and surrround. have 4 quintet surounds for rear sub ksw 10 bspeakers boston t 830 and 2 no name dipole as preasance