Gong ageng

The gong ageng is ( Kromo Javanese meaning large gong, ngoko is gong gedhe). It is the largest of the bronze gongs in the Javanese and Balinese gamelan orchestra. Unlike the more famous Chinese or Turkish gongs, Indonesian gongs have fixed, focused pitch, and are dissimilar to the familiar crash cymbal sound. It is circular, with a conical, tapering base of diameter smaller than gong face, with a protruding polished boss where it is struck by a padded mallet. Gongs with diameter as large as 135 centimeters (54 inches) have been created in the past, but gongs larger than about 80 centimeters (32 inches) are more common especially to suit the budget of educational institutions.

The gong ageng is considered the most important instrument in a gamelan ensemble: the soul or spirit of the gamelan is said to live in it.

Gong ageng are often proffered ritual offerings of flowers, food and or and incense before performances to appease spirits believed to inhabit it.

Commonly, less expensive iron gong ageng or a slit-type gong are made to fulfill the role of the bronze gong, though at the loss of sound quality- for poorer regions and villages. The cost of expertly pure cast & beaten bronze has seen a rise in bronze-plated and bronze-laminated iron gongs for the undiscerning expatriate.