Hello - I am looking to upgrade my setup to either 2 pb 2000s or a quad RSL 10s setup (2 front stage and 2 behind the rear seating area). My room is a dedicated theater that is 15ft deep by 13ft wide and 8ft in height. I have a limitation on sub woofer placement and the 6 year old dual SVS 10s I have now do not solve for base dead zones in the theater. I was thinking that 4 subs would do the trick or two larger front stage subs. What would be the best solution for this?