901 series 2 speakers

if you are thinking of buying, there may be newer better speakers for the price

the 901 was revolutionary when introduced and created a surprising sound stage

Later, it's ability to do that was eclipsed by other speakers with more accuracy

Bose Corp. is still a leader in pyschoacoustics, exp. in cars

Yup, there are better choices, but I still remember the 301's. They weren't great, but they did have a nice diffuse presentation. I listened to a dorm mates system and liked them. I lusted for 901's, but then Shahanian, Ohm, Maggie pulled me away. Finally, I became a Vandy fanboy.
@Mr. Nakamoto,
I hope you enjoy your speakers, they are definitely part of Audiophile history.
B

I didn't say they were great, I said they were fun .
I'm primarily a Classical music listener, If they were all I had or could have, I'd still be happy listening to my music .

They were just ok 40 years ago today they are really bad.Good luck enjoy.

Ok. Now I'll toss out my opinion. 
I think people looking for the sonic qualities of the 901, and who have the space to spare to accommodate them, would be better served by some sort of electrostat. 
As for the suggestion that Bose is a leader in psychoacoustics, I have nothing but contempt for the though. The 901 and speakers like it are designed around the demonstrably wrong assumption that the ear is well tuned to determine the locations of reflected sounds. It isn't. It's well tuned to determining the sonic characteristics of sound based on location. So long as those sound signatures are convincingly reproduced, the actual point of their origin is irrelevant to a good degree.