EP125 I think is a little on the small end, if you can spend a bit more I would go with atleast go with the EP175
EP350 or 400(depending on how big a sub you can use) . The 175 is just not enough for movies. Trust me on this. I was absolutely astounded at how much a proper sub, one that can reach ~20Hz, adds to the movie experience.
A Balrog would be a sad, muted creature on an EP175.
From my experience, you will not lose anything in the treble and mid range, and will gain much more bass with a sub over a floor-standing speaker.
