this aftermarket for JBL diaphragm will sound and perform just like the original JBL .

This diaphragm will fit the following JBL models  2446, JBL 2446J, JBL 2447, JBL 2447J, JBL 2450, JBL 2450J, JBL 2451, JBL 2451J, 4673B, 4675C-HFA, AS2212-STD, AS2215-STD, SP212-6/WH, SP212-9/WH, SP215-6/WH, SP215-9/WH, SP222/WH, SP225-6/WH, SP225-9/WH, SR-4706A, SR4706A, SR 4706A, SR-4726A, SR4726A, SR 4726A, SR-4726X, SR4726X, SR 4726X, SR-4731A, SR4731A, SR4731A, SR-4731X, SR4731X, SR 4731X SR-4732A, SR4732A, SR 4732A, SR-4732AT, SR4732AT, SR 4732AT, SR-4732X, SR4732X, SR 4732X, SR-4732XF, SR4732XF, SR 4732XF, SR-4733A, SR4733A, SR 4733A, SR-4733X, SR4733X, SR 4733X,  SR-4733X/F, SR4733X/F, SR 4733X/F, SR-4733X-6, SR4733X-6, SR 4733X-6, VS2210-6WH, VS2210-9WH, VS3215-6WH, VS3215-9WH, VS3218-6WH, VS3218-9WH

Overall Diaphragm Diameter: 5″ (127mm)

Voice Coil Diameter:  3.91″ (99.2mm)
Diaphragm Thickness:0.05mm
Diaphragm Height:18.4mm

Nominal Impedance:  16 ohms

DC Impedance :8-12.5ohms

1pcs