Thanks for your replies.
I have a Panasonic 34'' W/S (2002) Topfield SD 5000 PVR and an Onkyo SuperAudio DVD player, so without HD and a Blueray I'm not going to get the best audio going around.
My receiver is a Denon 3802 (2002)
While your here, I have just purchased a second sub and using an F connector from the back of the receiver, will probably use both, or the Jensen 10'' for movies and the twin 8s for music CDs? Will try them out.
Anyway, I'm wondering whether it is better to have the 2 subs at the same distance apart at the front, or is it ok to have one at the back (or side) of the room? Cable length at the front would be 2m and back 8m. Does it matter?
Cheers