Generally speaking, the answer is no.
Drilling a loudspeaker weakens the body. What’s more, any modification to the speaker will invalidate the warranty and may alter its behaviour.
To install a loudspeaker on a wall, there are manufacturers who specialise in making suitable brackets. Of course, the choice of models depends on the weight and size of the speakers concerned. This only applies to small models such as bookshelf speakers.
We would also like to point out that we have several ranges of flush-mount loudspeakers designed to be inserted into partitions or ceilings, avoiding the need for additional external supports, which are not always very aesthetic.
Some of our compact products include a mounting system for versions designed to be used as surround speakers in a home cinema system.
For more details, please refer to the user manual for your product.