Отзыв о Powerful Car Audio Upgrade: Ural AS-W30TW Speaker for Superior Sound Performance от Minoru Koshida ᠌

I haven’t finished installing the acoustics yet, so I won’t evaluate the sound quality yet. But the first feature has already been discovered - the hermetic case leads to the fact that when brought from a cold into a warm room, the silk dome is crushed (it is clearly visible through the mesh, a similar effect, as if a closed plastic bottle is taken out into the cold). After warming up, the dome returns its shape. Bye. After several such cycles, it can doubt for good or break through. Naturally, to supply power with a crumpled membrane means to damage it completely. In the winter, the car regularly goes through heating-cooling cycles. So I decided to immediately depressurize the speaker by drilling a thin 1 mm hole in the back so that the pressure is equalized inside and out. A thin hole should not affect the sound.