musical small sub for B&W 805s's


I was thinking about movin gto floor standers but there are things that I like about my 805s's that i have not found anywhere else.
Has anyone had any good experience combining a small sub or two with 805s's? right now I have a 15" sub that leaves just too big a gap.
I like the imaging and upper end but want the punch that I hear with full rangers. Listened to the 804s, 802d's and vienna mozart grands so far. liked the viennas but would really like to find an 8 or 10 inch sub that i could pair with the speakers that I already have.
thx!
jimmy3993
I used a pair of the old smaller Hsu passive subs and had good luck. They are the round ones with the 10" woofer. I use REL Stadiums with my Spendor SP-1/2 Es and they work very well. I use my main speakers full range and cross the subs over as low as possible. Try running the 805s full range and crossing the sub over at 30-40 Hz. It may be too big to match the 805s but I think that doing this would give it the best chance. REL works very well, they use a 10" Volt driver. If you look at them look at the S series [ Stadium, Storm , Strata] rather than the Q series , which is intended for home theater. I think that the small main , subwoofer route is the best way to go for many , if not most, people for just the reasons you gave. It is also easier to get maximum performance in most rooms with such a system. I have much larger speakers [Spendor S-100, Apogee Duetta Signatures] but am not using them. Good luck.
Post removed 
There are quite a number of very good options for small musical subs. It will depend on your budget and room size. You may want to check out something like the Velodyne DD10, some of the smaller MartinLogan subs, or the ACI Force XL to name just a few.