translation: Bước 1: úp cái tô xuống. Sau đó đục 6 lỗ trên đó. Và làm đế cho nó. Gắn loa, amplifier vào đó. Lắp mạch, ụp cái tô lên. Xong cái loa!
translation: And the first step is you turn it upside down, and then you drill holes in them, six holes per hemi, and then make a base plate, put car speaker drivers in them along with amplifiers in the enclosure, and you put that all together and you have these hemispherical speaker arrays.