Specs:

Overall Diameter:  5″ (127 mm)

Voice Coil Diameter:  3″ (76.2 mm) Edgewound

Diaphragm Material: Titanium

Diaphragm Height: 15.2 mm

Nominal Impedance:  16 ohms

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

DH1A-16, DH1A-MT-16, DH1AMT-16WP, DH2012-16, N/DYM-1-16, N/DYM-1-MT-16, ND6X-6 and many more.