Great info here for this new member. I have on the way a pair of 70' a 505, and a C2 to pair up with my Yamaha 663 receiver and Mirage Nano Sat rears. My room is 14X26 and we sit 12-14ft from a 60" Sony LCOS. Should I set the Yamaha receiver to large or small speaker and any starting point suggestions on how to set up the 505 up crossover etc.? FWIW,The receiver has the (YPAO) auto sound adjustment system. Thanks much and I can't wait till this stuff gets here to replace my old very inexpensive Polk set up.