Where does jumper cable go - doorbell wired

We are installing a doorbell wired ring. When we take our doorbell box cover off, it looks like this. Can’t see how to access the wires to attach the jumper cable. Thanks for any help you can give

You need to disconnect the white wires from the speaker and join them together. The connectors may not be removable, so you may have to cut the wire and re-make the ends.