Hello....we are building a new home with a dedicated media room (20' * 15' * 10'). I have Klipsch Cornwalls for the fronts, Klipsch KG4s for the rears and a Klipsch KSF-C5 for the center. Also have a pair of Klipsch Heresy's to use if needed. Have an old Definitive Technology Powerfield 12" subwoofer which works well but don't know how it matches up with the Klipsch loudspeakers. I am thinking about a Fitzmaurice THT lowboy sub with a 15" driver and a 300 watt plate amp. What you you think about this? Other subs to consider??? Thanks