This is from Cnet,The SR602's automatic setup routine fell short of our expectations. The system gauges how many speakers you have hooked up, determines whether they're large or small in terms of their ability to handle bass, measures their distances from the listening position, and balances the volume levels of the speakers and the subwoofer. Well, that's what it's supposed to do, but in our tests, it failed to detect the presence of our subwoofer. We ran the autotest sequence a few more times without success, even after we manually raised its volume level and repositioned the setup microphone. We next tried to get the sub back in the game with the SR602's manual setup, but the receiver steadfastly refused our best efforts to access the setup menu (it had worked normally before we engaged the autosetup system).