I have a Marantz 5013 Receiver hooked up to two Definitive Technology 9020s in Front (also for lows since they 8 inch subs with power amps), Def Tech pro-center 100 Center, and pro-monitor 800 rears. The center is powerful but main channels lack same drive in surround and in 2.0 channel off my turntable. Would adding just a two cgannyto the front mess with the surround, and will it add impact to my 2.0 channel listening?