You can add my modest IB line array to the list, my 1st ever DIY speaker project.
Here is link from ThomasW "Cult of the Infinitely Baffled" forum where my build thread is at:"Usul" the IB sub; Mike R Basement HT IB project
Line Array with (4) AE IB15's, (1) Behringer EP2500 amp, (1) FBQ2496
Total cost: approx $1.4k, give or take
Uniqueness item: Had to cut thru basement foundation wall to make the IB line array. Good point is VERY stiff mounting
Final EQ Waterfall chart (2 filters, 1st filter @ 30hz, -9.5db, 2nd filter @ 50hz, -3.5db) http://picasaweb.google.com/lh/photo...eat=directlink
Testing: Reached 124db @ 2nd row 3rd seat "money position" while watching KFP "Skadoosh" Tiger with the "wushi finger hold" (my kids love that movie, LFE are great in it)
"You are bluffing Panda, Master Shifu did not teach you the wushi finger hold?"
the Kung Fu Panda, and figured it out all by myself!"
I don't have the software to take realtime in room measurements of the pressure wave itself, maybe that is my next journey in LFE/Bass "stuff".