I know this topic has probably been hashed out many times, but my searching technique must not be good enough. Anywho, I need to get my S26s up on the walls. My couch sits against the back wall (apartment dwelling and a not so spacious living room require this). If I mount the S26s directly on the rear wall facing forward will that be sufficient for a 5.1 setup? Would it possibly be better to have the speakers pointed in towards the listening area? The surrounds are used only for DVD viewing. Thanks.