I just recieved the interconnect cable that goes between my left and right SDA 2 speakers. I have a yamaha rxv 800 reciever driving those sda's for my mains, rt 5's for surrounds, cs 400 for center, and psw 450 for my sub. When I tried to watch a dvd, and I had the interconnect hooked up...my reciever's protection circuit activated and shut off. When I unhooked the interconnect between my sda's...it works fine. What is wrong here? my reciever is set on 8 ohms now...should I change it to 4 ohms? Do I really need the interconnect cable between my sda's? Please...somebody help me!!!