2PCS CCAW Diaphragm For JBL 2445J JBL 2441J D16R2445 Horn Driver Repair 16 Ohm 

Overall Diaphragm Diameter: 5" (127mm)

Voice Coil Diameter:  3.91" (127mm)
Diaphragm Thickness:0.05mm
Diaphragm Height:18.4mm

Nominal Impedance:  16 ohms