Yes you can but it may come at the cost of image smearing/timing issues. I know a lot of people will claim there is no loss of image at 20z-40z... to each there own. I found I often needed to cross the speakers around 60z (or higher) to get them to blend in. My best guess is by the time you get to 40hz you speakers are no longer flat. Not sure how they are in your room.
Frequency response
I once tried to do this a long time ago but stopped using the sub because of very small timing issues. I personally would skip the sub and look for speakers with a little more bass... Your room is a good size. mid sided towers should work well. You might just be sensitive to boomy bass?
Frequency response
I once tried to do this a long time ago but stopped using the sub because of very small timing issues. I personally would skip the sub and look for speakers with a little more bass... Your room is a good size. mid sided towers should work well. You might just be sensitive to boomy bass?