The diaphragm Fits the following models: 

Delta12, Delta-12, Delta-12M, Delta15, Delta-15, Delta15M, Delta215, Delta-215, DLX12, DLX-12, DLX15, DLX-15, DLX153 DLX-153, DLX215, DLX-215, DLX-12M, DLX-15M, LX12, LX-12, LX-12E, LX-12M, LX-12ME, LX15, LX-15E, LX-15M, LX-15ME, LX153, LX-153, LX-153E, LX215, LX-215, LX-215E, LX15, LX-15B, LX-15BE, LX18B, LX18BE, LX18MB, LX18MBE, LX218B, LX218BE.

Specification:

Overall Diaphragm Diameter: 114.3mm

Voice Coil Inner Diameter:  50.8mm

Nominal Impedance:  8 ohm

6pcs