901 series 2 speakers

I can't imagine the surrounds on Series II being any good.  I was replacing series II surrounds back in the mid 80's... With that,  I know many who really like 901's for listening around the house, but I don't know of any audiophile that would sit in front of them with real intent of trying to create live music.  

Here is a decent little kit for only $100... they'll enter you into the audiophile world decent imaging, fairly smooth and detailed.... I'm sure that you might want a bit more bass, but you can add a subwoofer at anytime.  I hope this helps. Tim 
https://www.parts-express.com/c-note-mt-bookshelf-speaker-kit-pair-with-knock-down-cabinets--300-714...

had an old friend that had these speakers.... 901 series 2,  driving them was a Technics Sp10 w/Technics arm, Going into an Audio Research SP10, driving with Kenwood L07M mono amps. 
 I've never heard ANY Bose sound better.