I have the reference 6020cs in the front, a 3022cf for the centerand polk momo 6x9 in the rear. Put the polks in 3 years ago and replaced the fronts with the infinitys 1 year ago. The sound difference is amazing. I still have the factory receiver and amp.
Also the rear is a woofer and a midrange. There is not tweeter in the rear. The polk momos i used are a 2way with seperate leads to the woofer and midrange. I just wired those like the factory setup. With the front speakers I orginally didn't use the crossover but the treble was was way to over powering. I had to wire it using the -3db connections on the crossover. The tweeter is the only thing wired to the crossover.
