Otherwise the level of the adjustment, the speaker goes perfectly. Easy to remove and put (in contrast to the previous model when you had a star key).
The cache is of good quality and stability does not remove the enclosure. It protects the edges of your speaker.
However, when you carry your speaker with the cache, pay close attention to the front grille which may be distorted if shock and especially scratches.
I expected better taste when we took the covers of the previous version (SLII).