Sub placed behind couch?

[jkwest]

Originally Posted by Sir Terrence

No matter how many times you tell folks this, people are going to do what they want to do. I always get told "its sounds great there"(by the side of the couch). Its great until I pull out my RTA and began to measure huge dips and peaks in the response in multiple position within the room.

Our ear/brain mechanism has this tremendous ability to ignore problems if we believe something is satisfactory. Our ear/brain mechanism has a tough time hearing problems in the deep bass, and accessing how bad they are. Our hearing is just too insensitive in that area. Most folks just calibrate the amplitude of the subs in relation to the mains. In this case you are aligning your room modes to the mains, not the output from the sub itself. If you want to get the ulitmate performance from your sub(and hear what it really sounds like) you must do a frequency sweep first, equalize out the room modes(nodes can be ignored, they are inaudible), and then calibrate the subs to the mains. That way any room modes are reduced in amplitude, and a more accurate calibration to the mains can be acheived.

ok...but, what about a two sub placement?



I just added the 2nd sub to my room and set the crossover frequency to 180.

i haven't noticed any sound problems, but, I don't have any testing equipment besides the Audessy that is in my 605.