⭕ Excellent condition, Bruel Kjaer 9640 Turntable system. Under 2 years old. The Turntable System is designed to rotate a test object, such as a loudspeaker, microphone, or hydrophone, for measurement of directional response. When used in combination with a personal computer, Type 9640 becomes part of a system capable of automatically recording the directional characteristics of many different test objects. Turntable System Type 9640 consists of Controllable Turntable Type 5960, Turntable Controller Type 5997 and Remote Control WB 1254. Delivery available or local pick-up.