I have just got my 970 in and everything is going great. I am stereo newbie and I have a question about the subwoofer. My subwoofer a psw505 has an LFE rca input (unfiltered) and a Line In right and left RCA (filtered). The 970 has 1 sub output and I plugged it into the LFE but I do not think this is right. Do I need to get an RCA cable Y adapter so I can plug the sub into the Left and Right input instead of the LFE. Any input would be much appreciated.