just got the pioneer vsx-1020-k receiver and upon speaker setup, i cannot get any sound from the sub. further, its not see'ing the sub during manual or mic test. i get an error message that says the sub is too low and to turn to max. problem is its already at max. it's a powered aiwa sub connected via an rca wire to the sub pre out on the receiver. the sub works great with my HK AVR347 receiver that the pioneer is meant to replace (more HDMI) i tried going to the bass setting in settings to try and turn up but for some reason it wasent there. the manual notes that some settings will not appear due to current setup/config of the receiver however the manual does not explain how to remedy this. so i tried several different setting to get to the bass setting but could not get it appear. the speakers are all setup as small at this point im not sure if its a settings issue or a hardware issue. can anyone offer any enlightenment? i would be greatful.