question about cone area calculation for determining pressure class

[kushy_dreams]

When calculating cone area for pressure classes, are square woofers counted as a normal woofer?

For example, a round 15 would have 177 sq/in of cone area, but a square woofer of the same size will have more cone area, 225 sq/in to be exact.

So which number for cone area would be assigned along with the fusing x10?

MECA rules do not specify shape of the cone and just list general sizes

thegreatestpenn ;

[will3]

You are correct it is the cross section area i.e 15" square ( 15x15 = 225 sq in ) there is a cone area quick reference chart on page 47 of the MECA rule book for quick reference on cone area for the pressure class rating.

[kushy_dreams]

thank you sir!