KIVA is main element of a modular WST line source with variable curvature. It is is based on a 2-way passive design with a nominal impedance of 8ohms. It features 2 6.5-inch speakers in a bass-reflex tuned enclosure and a 1.5-inch diaphragm compressor. The transducers are implemented in a V-shape configuration. The cabinet is made of a unique composite material with remarkable acoustic properties, very similar to the ones of the Baltic birch plywood, and with the added benefit of a high immunity to moisture. A 3-point rigging system is integrated into the cabinet.