For your speaker hookup, make sure that your wires are attached correctly. Look for a line on one side of your wires ( or writing ) and decide if that side of your wires will be used as positive or negative ( red or black post ). Make sure that the part comming off your Receiver Positive post goes to the Positive post on your speakers....and the same for the Negative with all speakers. If one speaker isn't hooked up correctly it can cause you problems. For the sub, you only have to plug into either the Right or Left line input as you have no LFE. Turn your " Low pass " filter fully clockwise which will in effect create an LFE input. These hookups will ensure that your Speakers and Sub are at least hooked up correctly.