OK, it's a pretty basic, simple question... but I haven't found much out there addressing it.

When you calculate the area of a driver's cone, and it has a phase plug, do you remove the area of the phase plug?

I would think the answer would be yes, but on drivers I've been working on lately, I notice the factory cone area works out about the same as what I'd calculate from measuring the cone diameter. I.E. it comes out as the area WITHOUT removing the phase plug area.

When you calculate the area of a driver's cone, and it has a phase plug, do you remove the area of the phase plug?

I would think the answer would be yes, but on drivers I've been working on lately, I notice the factory cone area works out about the same as what I'd calculate from measuring the cone diameter. I.E. it comes out as the area WITHOUT removing the phase plug area.

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