Sub positioning success is dependant on room treatment or bass nodes.
The main speakers could have the best positions for imaging and the worst for even distribution of lower bass. In which case you limited your solutions.
Towers with built in subs vs separate subs
I debating on upgrading my paradigm founders 100f speakers to 120H speakers as they have built in subs and my space is limited. I would love to incorporateca a rel s510 but im concerned that i may not get my moneys worth out of it because placement is very limited. I own rel ht1205 which i am very happy with for movies but i want something better for music. Plan is to remote my 1205 to the back of the room for movies and either trade up for the 120H paradigm with built in subs or add a s510 to my current paradigm 100 f's.
Any thoughts?