Guy-
Hate and pain hit it on the head. It's really going to depend what brand speaker you have already? or which speaker your going to put on the G3 tower. All the brands have a solution. The Exile G3 adapter is pretty slick and more information can be check out here:
Exile G3 adapter thread TMC
Hope that helps. If you need any more Exile info, hit me up.
-Brian
Exile Audio