I wouldn't worry


Hi! In this case I wouldn't worry about it, soundwise. The 'sinking' of the drivers can in some cases help to prevent distortion coming from difraction occuring when the sound is spreading on a wide angle from the drivers. The drivers in the 2pi, however, does not send much sound to the sides in the upper frequency area, where the problem usually is biggest. So, as the other poster said, in this case it's more a question of cosmetics.

Btw., there are other methods of avoiding the mentioned difraction problem - one is to cover the front plate in some sound absorbing material, like felt. But mind you, not all speakers benefits from it! Some are actually designed so that the extra output helped by the front is supposed to be there - in other words, they would sound worse if they were treated!


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