MHB 4818 Hornresp input ok?

I want to know if my inputs are ok.

Looks about OK )apart from it's name). You could subtract the volume occupied by the driver (about 8 - 10 litre) from the rear chamber, just as the volume inside the cone (about 5 - 7litre) can be added to the throat chamber.

Best regards Cubo

Thanks for your valuable comments.
Yes, the name is wrong. By Mistake.