I currently have an 5.0 Eltax Universe system running with an Eltax 8.2 sub. I want to upgrade my front speakers to Symphony 14.3's. If I did would I be able to replace the rear speakers on my universe system with my original front speakers? And if so would it sound ok? On a related note when I listen to movies in 5.1/DTS you can't really hear the rear speakers that loud. I've turned the individual volume levels up on my reciever but it doesn't really help, any ideas?