Wayne Parham Messages: 18764 Registered: January 2001
Illuminati (33rd Degree)
Do not use the automatic setting on the receiver. As you have guessed, it will only become confused. What we're looking for is blending, not a single point source (since that's not possible indoors anyway).
The best thing is to setup two subs as flanking subs, each slightly beside, below and behind the speaker it is flanking. Then put the other two on the other side of the room. With four subs, it doesn't really matter where you put the other two. I'd probably put them in opposite corners.