Chassis volume measurement

Hi People,
I am kind of wondering about how to best construct a loudspeaker.
Now given that in the end I get some volume for the Box that I need to build. but the problem is, that when I build in the Chassis I loose some volume (Chassis cone and magnet at the minimum)
Is there any tested technique how to best calculate or measure this volume?

kind regards
huegene
 

PRR

Member
Joined 2003
Paid Member
> any tested technique how to best calculate or measure this volume?

Geometry?

Computing the volume of a cylinder or cone is fairly easy. And in most cases, make nearly no difference to the result. A so-called 10-inch cone might use a 1700 cubic inch box, the cone is about 11 cu.in., the magnet maybe 30 cu.in. 1700 or 1659 is only 1.3% difference in resonant frequency, and ALL loudspeaker parameters vary more than that.