Herc Game Theater and Cambridge Soundworks problem

Hi,

I just bought the Game Theater XP after reading the posts from here (goodbye SBLive!) and I'm having a problem getting the subwoofer to work. It just won't. The 2 satellites work fine.

All I have is the one stereo 1/8in jack that ran everything. It seems the rack needs a separate input for the subwoofer which mine doesn't have.

I've updated the drivers for the GTXP and selected speaker 2.1 still nothing out of the subwoofer. I even got a stereo to mono RCA jack thinking that would help, but it didn't.

Can anyone give me an idea on how to get the woofer working? It appears that the only speaker system I find with seperate subwoofer inputs, is a digital system. I don't want to go that route if I can avoid it and I don't have the room to get a 4.1,5.1 system.

Thanks,

Mike