Need a little help with onkyo 605 zone 2

[plowmanjoe]

I'm not even sure if zone 2 is what i want. but i'm trying figure out how to hook up my turtle beach ear force x3 head phones to use with my xbox 360.

usually you would use the red and white cables coming out of the xbox, but i have it hooked up with the hdmi. so i tried plugging in the turtle beach ir thing to zone 2 line out. but i'm not getting any sound from the xbox. i can get sound from my cable tv source though. just nothing when it comes to xbox or my ps3.

any help is appreciated.

thanks