Are you making the panels yourself or buying ones already made ?
If you were to get ones from this site:
http://www.gikacoustics.com/gik_242.html then its just a matter of figuring how many you think you need and then doing some simple math( this site does the total for you ).
If you were to get ones from this site:
http://www.gikacoustics.com/gik_242.html then its just a matter of figuring how many you think you need and then doing some simple math( this site does the total for you ).