Remove the four T20 screws securing the driver to the front panel.

Lift the midwoofer out of the cabinet slightly to disconnect the terminals

The center midwoofer driver wires are extremely short. Care must be taken to not strain the wires. This is a two handed operation of holding the driver while disconnecting the terminals

The insulated terminal simply slides off, but the non insulated terminal has a locking tab that must be depressed.