I made a mistake and hooked a sub to my uncle's Grand Wega (speakers must not be visible.) Unlike my parent's Sony the Audio Out only functions w/ Speakers turned off. What is the easiest way to get around this? Is there anything in the menu (service even) to fix this? He wants to augment his TV sound w/ the subwoofer. I was going to just buy him a receiver to go w/ it, but he has no space in his cabinet. I need some advice here. Thanks.