Bi-pole speakers

[callas01]

Hey guys, I have a question.... I use a 6.1 system, and I just sold my old 5.1 Sonys cause I got the Energy 3.1, so that left me with one empty spot(I had a pair of bookshelves left over which added up to 5.1), BUT I want to keep it a 6.1 cause of the way my house is there would be a huge gap in the rear speakers.

OK, so I have a bookshelf that takes up the whole back wall until you get to the opening for the dining room. I currently use the 6th speaker in the book shelf towards the far end of the bookshelf right at the opening of the dining room. I was thinking that with a bi-pole speaker there I could cover a better portion of that opening (about 7 feet to the other speaker).

My question is if the speaker is 3 sided, see link and right up next to the wall of the bookshelf on one side(center most point I can get it too), will that speaker even be effective? Or should I just go with a standard bookshelf and let it shoot out straight?

Thanks Steve