Anyone Using Bose 901 speakers In A Home Theater?

Yes, Revels are expensive and might be not be to your liking but putting a lot of (from what I've heard) average speakers won't make for quality. I cannot speak of multispeaker home theater systems since I've never had one, but having high quality front speakers seems to be the highest priority. 901s might sound good to you (it's a subjective thing) but I cannot imagine how they can fill the room of this extreme size.

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Kijanki,..your quote is below:

I cannot speak of multispeaker home theater systems since I've never had one,

....and you have no experience with the 901's.
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As always, the end result has to do with system setup. I am fortunate to have a variety of amplifers, preamps and CD players to experiment with. To simply throw a speaker or component into a given system and think you have evaluated that speaker or component is not how it works. All that tells you is how it sounds in that system. I have spent several months with a variety of electronics and cables evaluating the Bose 301. I can tell you they are sensitive to every little change in the system. They produce a big soundstage and image as well as any electrostatic or planar speaker I have ever heard. Midrange timbre is natural and toward the warm side of neutral making them idea with solid state amplifiers. If you want to listen to the equipment look elsewhere because all these speakers are good for is listening to music.

....and you have no experience with the 901's.

I just questioned if you can get good sound level from such small speaker in very large room, even if you use four of them for the front.

MofiMadness- Thanks for posting the link to the review of the 901. I thought it was very informative, aligns with what I heard from mine and answers the question originally posted that they deserve a listen for his big room home theater.
The review listing the price at $1,400 stuck a cord. I remember the fear and trembling I had at such an expensive purchase when I bought mine. Now I find myself reading articles about $1,400 power cords and wondering if they may be worth it. YIKES - it appears that I have descended the slippery slope into equipment madness, all the more dangerous because it feels like audio nirvana.