Just raplaced my old trusty Sony HTK215 surround system for a Sony HT-S20R 5.1 soundbar. Its a great replacement and im made up with it. There is only one slight "niggle" My listening position is much closer towards one of the rear channel speakers and there is no option for balance on the rear L/R speaker on the new system, whereas the older system was a little more flexible allowing me to offset the volume of the rears. My question is , is there a little box of tricks out there that would allow me to balance the rear speakers externally from the sound bar system iteself, eg in the wires leading to the rear speakers. Or could I simply connect a variable resistor in the speaker wire itself