Hornrep. Not excepting my SD in put from my driver?

[Jeffrey 01]

Good morning. So I’m working on a ported box for my Mark Audio CHN-50P drivers. The SD says said it has to be 1 but, it’s 0.0028 m2. So is the Hornreps. program only for a certain size drivers? Here is a Picture. I clicked on the forum for Hornreps. Nothing opens so I posted it on this forum. Please help me or explain what I need to do to get this program to work right? Thanks Jeff

 

[GM]

The answer is probably in the HR help file, i.e. input as 28 cm^2

 

[Jeffrey 01]

okay thanks GM👍