w6 or 2 type r's

ok i have a question since everyone seems to be having a good day.LOL i have six punch p2s 12s how would you measure the cone area?Blazerspl

6 rockford 12s

5500 watt pa amp

12.0 cubic enclosure

BIG 3

bwhvac065@aol.c wrote: ok i have a question since everyone seems to be having a good day.LOL i have six punch p2s 12s how would you measure the cone area?

Look at the specs of your sub and look for a value that is called "Sd". That is the effective cone area of your sub. Then just multiply that number by 6 and you have the total cone area of your subs. Otherwise you can just do the area of a circle (A = pi * radius^2) to give you a basic idea. It won't be perfect but it will be close enough.

ok thanks. On the equasion above pi is 3.14?Blazerspl

6 rockford 12s

5500 watt pa amp

12.0 cubic enclosure

BIG 3

diameter of the driver / 2 = r (I measure from the center of the surround roll to the opposite center) EX: a 15" driver, will measure about 13" across, so 13 / 2 = 6.5 3.141592 * (6.5 ^2) = Sd 3.141592 * 42.25 = Sd 3.141592 * 42.25 = 132.73 in^2 132.73 * 6 = 796.4 in^2 of total surface area, for six 15's. An easier way, though, would be to use the manufacturer's specified Sd, and multiply by the number of drivers you want to use.It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."

bwhvac065@aol.c wrote: if not can you possibly do a demo of the correct equasion? either way thanks for your time

Yes, pi = 3.1415. Radius^2 means the radius squared. An example would be... A = 3.1415 x 5.5^2 = 95 square inches of cone area. 95 x 6 subs = 570 square inches of total cone area. The 5.5 value refers to a 5.5 inch radius. The cone are will not include the entire sub so I just made up a value that I figured would be close to the radius you would use for a 12" sub.

damn that is alot of math i think i will go with the SD. Thanks a million fellasBlazerspl

6 rockford 12s

5500 watt pa amp

12.0 cubic enclosure

BIG 3