I have an all infinity beta setup so I am using 4 ES250's as surrounds, left right, back left, back right. These speakers have the option or dipole mode or regular, you can even run 2 cables to them to make a seperate left and right, for example one center rear speaker could be wired as left and right if you wanted it too. I love these speakers and run them in dipole mode. These a few years old now and hard to find.
11/28/12 at 10:44am