I have thought about everything and this is what i came to:
This for a Receiver http://www.crutchfield.com/S-C73HhpZWkI5/cgi-bin/ProdView.asp?s=0&c=4&g=10420&I=158STD897B&o=p&a=0&cc=01&avf=N&search=
This for center http://www.crutchfield.com/S-C73HhpZWkI5/cgi-bin/ProdView.asp?s=0&c=4&g=10420&I=158STD897B&o=p&a=0&cc=01&avf=N&search=
These for back http://www.bose.com/controller;jsessionid=BMkgIveed7SeCMbB29yl0ERUcLMMSWK5WEl47eGuOKW6uYHN8U5c!1401829922!-1457119388?event=VIEW_PRODUCT_PAGE_EVENT&product=301_rear_index&pageName=/home_entertainment/theater/speakers/rear/index.jsp
and these for front http://www.bose.com/controller;jsessionid=BNK3fBtCqXSIqwm2CXt7U8l7TSegdlJBJLar9dKLXd2aw4Ome1XK!1401829922!-1457119388?event=VIEW_PRODUCT_PAGE_EVENT&product=901_floorstanding_index&pageName=/home_entertainment/stereo/index.jsp