I am not getting any output from my sub when I play music/anything from my phone. The sub definitely works when I have the blu-ray or tv on. I've tried every surround setting on the receiver and even tried changing the configuration settings to 5.1 from 5.1.2, but still nothing. If it matters, I have a Pioneer VSX-LX303 receiver, a Klipsch Reference speaker system, and an iPhone. TIA for any input.