Specification:

Overall Diaphragm Diameter: 5″ (127mm)

Voice Coil Diameter:  3.91″ (127mm)

Diaphragm Thickness:0.05mm

Diaphragm Height:18.4mm

Nominal Impedance:  16 ohms

Here is a list of the driver part #’s:

2446J, 2447J, 2450J, 2451JJ, 2452J (will not fit this model with spring terminals) and more.