SKN: 2447H   ...Brand New Genuine JBL 2447H High Frequency Driver. 8 ohm, 1.5" bolt on throat, 4" edgewound voice coil, 100 watts continuous above 500 Hz, 150 watts continuous above 1 kHz,  500-20,000 Hz.

If you have this driver and only need the replacement diaphragm for repair, then you need the D8R2450 or Aftermarket Diaphragm.