Too bad you can't listen to them first.
Again, both are rear ported and the impedance/sensitivity are nearly identical. So if must choose without an audition, might as well take a chance and go with the MA Silver S. It has a bigger mid/bass driver at 8" and goes down to 40Hz. The Dali has a 7" and goes down to 50Hz.
Of course this is still no guarantee on how they would actually sound to you. Good luck.
Again, both are rear ported and the impedance/sensitivity are nearly identical. So if must choose without an audition, might as well take a chance and go with the MA Silver S. It has a bigger mid/bass driver at 8" and goes down to 40Hz. The Dali has a 7" and goes down to 50Hz.
Of course this is still no guarantee on how they would actually sound to you. Good luck.