Much greetings and thanks for the information of the seven pi speaker!
I needed a few days for study it, especially the downloaded files from your site were great for me. Also the forum is very interisting.

I showed my wife the seven pi plans and she don`t like it...
So i have to search an alternative system!
Following solution I consider:
15" Bassreflex cabinet (what kind of eminence Speaker you prefer?
I looked at the Magnum15HO)
10" Mid-Horn loaded with DELTA 10
1" HF 290 with PSD 2002
My living room is 19x12x8 ft and speaker has to stay near corners.
My favorite speaker will look like the web-link .
Can you help me?
http://www.woodhorn.com/2005.htm

Much greetings and thanks for your endeavors
Karl-Heinrich vom Dahl