well ...  he say that no subwoofer would work on he receiver , even when try out other subwoofer from bestbuy . chance be , he just forget to change the setting on the dvd player itself . yes , the dvd player setting MUST also be set to have a subwoofer output , as well as change the setting on the receiver . i myself have not try this product but do own many aiwa product that have dependably support my listen need . try it out for yourself and see if it really be a defect . chance be , that guy just overlook one of the thing he have to do to get the system work .