I have a 7.1 reciever I'm going to use for audio only, I have 4 8ohm speakers if I.were to book all 4up in a series that effectively quadruple the ohms ,and if i chose only to hook up two it would double the ohms, so would this wiring allow the receiver to run cooler and more efficently vs running parallel , and what effect would this series wiring have on my receiver and would the sound be affected