I originally bought a Bose Acoustimass VI system with a Harmon/Kardon AVR 130 receiver. I wish I had consulted this website before purchasing: I am not only amazed with most members' knowledge, but also with their equal disgust for Bose products. Anyway, I was not happy with the bass of my Acoustimass system so I bought an Athena AS-P300 8" subwoofer. I really like hearing real bass, but I now need help with my system settings. To lay some groundwork: --I live in a small (carpeted) Chicago apartment. --I use my system for equal part TV, DVDs and CDs. --My AVR 130 only has one sub input which is hooked up to my Athena sub, not the Bose system. Now my questions: --Which sub input do I want to use on my Athena subwoofer: Direct (crossover bypass) or Sub (adjustable settings)? --Do I want my receiver speaker settings at small or large? --What do I want to set my Bose front and surround speaker crossover's at? --Do I want my sub setting on my receiver to read "LFE only" or "Left+Right+LFE"? --Should I keep the Acoustimass "sub" and the Athena sub separated? If so, how far apart? --Any general recommendations to optimize sound? I appreciate any help that the knowledgeable members of Home Theater Forum can provide. I realize the first advice most will give is, "Get rid of the Bose!"; however, that option may not be in the financial cards. However, I again point out that had I consulted this site before buying, I would not currently own Bose. Thanks again for the help.