Yes, I meant simulate. Maybe my hearing has deteriorated enough that I can't tell the difference anymore, but the sound bars I've heard sound good enough that I'm willing to give up the cluttered mess of running separate speakers and all the wiring. Isn't a 3.1 system just left, right, center, and sub? A sound bar, or least the ones I'm looking at, simulate 5.1 or 7.1, and in my system the .1 will be a separate sub (I'm looking at the HSU VTF-3 MK5 HP)...depending on which sound bar I end up with, it should sound pretty darn good...
Do any soundbars out there do proper bass management, meaning internally crossing over upper frequencies to the main speakers while sending lower frequencies to the sub, and also directing the .1 discrete channel to the sub for all LFE content, like a home theater receiver does? Or is the subwoofer output on these soundbars just a dummy full range mono output and then you have to rely on your subwoofer's own crossover to try to make it blend in with the rest?
The other big thing that you'll be missing is room correction that most HT receivers offer these days. This really helps even out frequency response due to imperfections of your room setup, remove standing waves, address reflections, etc. Some of the better ones will also EQ the sub.
Alas, I understand wanting to give some of it up in order to reduce clutter.