hi everyone. i was reading this thread (http://clubpolk.polkaudio.com/forum/...threadid=28564) and it got me wondering about my receiver. i bought the sony str-de997 before i bought any speakers. i now have polk rti-10's and just bought a velodyne dls-5000r sub. i plan to add a csi5 front and some polk ceiling speakers for surrounds at a later date. the sony receiver is rated at 120 watts per channel and i listen to ~ 60/40 music/movies. is this sufficient to drive the speakers? thanks.