The NEXUS grille is special because it mounts directly onto the front baffle of the speaker. This avoids
the problems of diffraction produced by conventional grille frames.
The grille can be removed by gripping the top right corner, pulling it so that the elastic clears the baffle
and then carefully removing the rest.
Fitting the grille is a time consuming procedure, so unless you want to use the speaker without the grille,
it is best to leave it on. If you have to refit the grille, first find the join in the elastic and locate this in the
slot above the port before fitting the top part of the grille.