forgot to mention that the subwoofer has only 3.5m analog input, I was told it is for connecting to the phone. the main input to the subwoofer is HDMI ARC which is connected to TV HDMI ARC. I tried to connect RCA to the Onkyo sub woofer out to the 3.5 mm analog input and got no sound from my subwoofer...any other idea? need help badly...