Just how big is that driver?



hi All,

I'm wondering just how to measure drivers physical dimensions. Are drivers measured only to the surrounds inner perimeter? Or, in other words, are they in fact measured to the overall extension of only the material making up the cone itself, and NOT the surround/supportive construct?

Or, in fact, is it�s actual dimensions, the whole overall exposed, structure, right out past the screws holding it to the baffle?

To my way of thinking, a cone or dome driver's size is just that part up to but not including the surround, if any, regardless the actual materials being used.
blindjim

Showing 2 responses by undertow

Most 10" drivers are at the outer most part of the frame measured(a bit deceiving for sure), normally the surround and cone make up only about 8.75" to 9" of it actually. And yeah they still consider them 10's commercially.. some european drivers these days seem to fess up and call them 9" drivers instead.
Nobody ever made a rule I guess that the size stated of a driver is of the cone alone(or cone and attached surround), most seem to think as a logical assumption the measurement provided is of the actual cone surface area, but it is instead of the Driver's entire assembly, which seems to coincide pretty consistentley with first hand experience shown here by the examples above.