Hello, The front speakers are set at 80.the recievers does not have large or small speaker settings. There are only full range or at the cross over setting.I did some more a/b testing between the two and going from the 180 to 150 the reciever would just shut down. When i went from 150 to 180 it would not.Do you think that my reciever is on its last legs? any suggestions would help. thanks