As JohnK mentioned the most budget-friendly thing that I could do sometime soon would be to add Outlaw LFM-1EX to my current setup. The LFM-1 and LFM-1EX are pretty much matching subs, except the EX has slightly more head room and slightly more extension (but same driver, port size, number of ports and cabinet). Would adding a midrange pair of subs (maybe around $800 to $1000 price range, such as SVS, Axiom or Hsu), when the budget allows for it, work out well if the Outlaw subs were in diagonally opposite corners and the midrange subs were in diagonally opposite corners of a rectangular room?


I am thinking that the midrange subs would add some more extension and impact, but the extension that they add would be smoothed out for every seat. The frequencies that all four subs play well would be really smooth for each seat.