I do not own the LFM-1, but let me try to trouble shoot this. I am assuming you have the 950, go into its set up menu and see if you have set the subwoofer to "on." Is your sub plugged into a "live" outlet? Is your sub set for "auto on?" Is your cable plugged into the correct output of the 950? Have you increased the sub trim level on the 950? How high is the sub's volume level? Your sub should work on all inputs unless your have set your mains to "large" and have selected "bypass."