P21 headphones for PS3 - HDMI cable?

you still use the red and white rca's on the original connector and just go to ur sound setting and select the last option. the video shouldnt change just leave the hdmi cable hooked up. you also have to go to ur mic settings and pic the turtle beach option. PS I love the headset. I use it on Socom and you can hear footsteps from afar. Has helped me kill many campers. LOL