Brand New JBL D8R2453 Aftermarket Diaphragm 8 ohm.
For models SRX722 and SRX725 that were made after August 2011. SRX722 cabinets will have a serial number greater than PO413-21617 and SRX725 with a serial number greater than P0415-30981. Also used in STX825
Note: This aftermarket diaphragm will need to be soldered into your old black cover plate.