To remove the speakers in the Opel Corsa D doors, it is necessary to dismantle the plastic lining of the door. To remove the broadband speaker, you need to unscrew the two screws that are pinned. Then release the retainer and detach the connector. Then roll out the third screw that is behind the removed connector.
To remove a high frequency speaker, you need a flat-blade screwdriver to lift the connector latch and remove it. Next, you need to release the three tabs in the circle and pull the speaker over.