You can be successful to combine the two... but it does take some good planning.
First thing you need is a very good pre/pro (I'm using Krell HTS7.1, which is a great HT pro, but even more importantly is also a fantastic 2-ch pre) and good amplification (again, I'm using Krell, a 2-ch for fronts and a 5-ch for center/surrounds).
The problem you will have is the display... you can't put an LCD, plasma or anything like that between the speakers and expect to have good 2-ch sound... the reflections will kill the sound, so either a drop down projection screen and/or a thick curtain that covers the entire front wall behind the speakers, but in front of the screen.
So, yes, it can be done, but it takes time, money and work... and it won't be less expensive than having one HT setup and one separate 2-ch set up (and probably actually more expensive, but if you don't have the space....)
First thing you need is a very good pre/pro (I'm using Krell HTS7.1, which is a great HT pro, but even more importantly is also a fantastic 2-ch pre) and good amplification (again, I'm using Krell, a 2-ch for fronts and a 5-ch for center/surrounds).
The problem you will have is the display... you can't put an LCD, plasma or anything like that between the speakers and expect to have good 2-ch sound... the reflections will kill the sound, so either a drop down projection screen and/or a thick curtain that covers the entire front wall behind the speakers, but in front of the screen.
So, yes, it can be done, but it takes time, money and work... and it won't be less expensive than having one HT setup and one separate 2-ch set up (and probably actually more expensive, but if you don't have the space....)