Well, I'm at it again. This time I'm attempting a multi sub setup by Dr Earl Geddes. It is similar to Toole's and Welti's papers in some respects, however, it uses more of a random placement for the subs, versus midwall positions.
http://www.mehlau.net/audio/multisub_geddes/http://www.gedlee.com/I don't have all the fancy equipment required, but have found this free program that seems to work well.
http://www.pensa.fr/freqresplot/indexe.htmBelow are some graphs, the first one just my EP600 alone, followed by my twin 350's added. I'm pretty much getting similar results in all 5 seats, so only posting the primary seat.
Not to bad as you can see I'm under a 5dB difference across the frequency range. This graph was done in 1hz increment steps, not some 1/3rd octave type test.
600 only up front left corner
600 up front, one 350 on left side wall about 3/4 back, and the other 350 to the right side of the room.
