What is your AVR? How many SUB OUTs does it have?\n\nhttps:\/\/www.audioholics.com\/home-theater-connection\/crawling-for-bass-subwoofer-placement\n\nGeddes technique is my preference. The concept of specific placement for all rooms is bogus... because All Rooms Are Different! It sounds like you have a more complex room, therefore, the dogmatc approach of front wall, 1\/4 wall, 1\/2 wall, corner loading... may not work for you. If you do the Crawl with an open mind and a willingness to learn, the following can make a lot of sense. :)\nhttp:\/\/seriousaudioblog.blogspot.com\/2012\/05\/two-great-articles-on-multiple.html\n\nYeah, what Ryan says here is also very relevant. All the EQ settings and port plugs in the world won't do much if your room doesn't like where your subs are.