WESTERN ELECTRIC 630A '8 BALL' VINTAGE OMNIDIRECTIONAL DYNAMIC MIC W/XLR ADAPTER
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good cosmetic condition, perfect working condition
Western Electric developed this dynamic mic in the late 1930s, omnidirectional to 15 kHz. Called the 630A, it was better known as the Eight-Ball mic. The 630A microphone is a pressure operated moving coil or dynamic microphone and is a carefully engineered and precision built instrument, the general design of which has been proved over many years of use in high quality studio work and acoustical measurements. Each microphone is tested in free-field conditions to stringent performance requirements. The polar response is omnidirectional; i.e., the mean sensitivity is independent of the direction of the incident sound, and the frequency characteristic is nearly so.