by Raymond » Mon Oct 27, 2014 4:58 pm
Nothing official about this but what I've read and heard, is that the original Cuban design for bongos was 7 macho drum and 9 hembra drum. However, the first popular mass produced brand, Latin Percussion or LP, made the macho drum 7 1/4 and the hembra 8 3/4. Since they became so popular, practically every mass produced company went the same sizes. However, during the last decade there has been a comeback to the 7 and 9 sizes in some models by some companies. The 7 1/4 and 8 5/8 is the most common and most popular size. Regarding sound, it is true the head, thicker or thinner heads, of a bongo is an item very important in the sound. Tuning is another aspect.
The most common modern tuning in Iatin music people tend to go for sharper macho and deeper bass sound. Therefore, conventional wisdom tells you that a smaller drum will give you a sharper sound and a bigger drum will give a deeper sound.