GENERATING ELEMENT: Moving Coil Dynamic. FREQUENCY RESPONSE: 50-15000 Hz. POLAR PATTERN: Unidirectional (Cardiod). IMPEDANCE: (500 ohms normal). OUTPUT LEVEL Power Level: -60db (0db = 1mw per microbar) Open Circuit Voltage: -78db (0db = 1 volt per microbar) 1.25 mv/Pascal SWITCH: Low profile, lockable. GRILL SCREEN: Woven Flex-Form TM steel. CASE: Die cast Zinc Alloy. FINISH: Durable textured urethane ash gray case and gunmetal black screen. WEIGHT: 8.75 oz.
DESCRIPTION AND APPLICATIONS:
The Astatic JT18 is a dynamic cardioid microphone designed to meet the demanding instrumental requirements of a professional, but priced for the budget - conscious musical and vocalist. A wide frequency response, covering the audible range necessary form accurate, natural sound, assures quality reproduction for all types of instruments. The JT18 is also a fine vocal mic for performers who prefer slim compact "feel".
The JT18 is especially effective for use with woodwind instruments, tom toms and applications where space is limited, but quality is demanded. Its precise frequency response provides a natural, transparent sound quality. the uniform cardioid polar pattern reduces annoying feedback when used in close proximity to sound reinforcement speakers and monitors.
The frequency response of the JT18 may be enhanced by increasing or decreasing the distance from the sound source. This phenomena is technically know as "proximity effect". Normal or "flat" response is generated at a distance of 24" or more. However, as the distance to the sound source decreases, the base sensitivity increases, providing a solid, robust character. By utilizing this proximity effect, the JT18 becomes another instrument in the hands of a skillful musician.
The microphones grill screen is constructed of flex-form TM, a special alloy that dramatically resists deformation, while eliminating any risks of adverse performance caused by a bent grill. This unique feature of retaining its original shape assures that the JT18 will maintain its attractive appearance.
Like most of the JT family, this microphone is supplied complete with a snap-in/out microphone swivel-mount, an on/off switch, and an effective internal multi-stage pop filter to maximize wind and breath noise. The JT18 has the most effective shock mount available, reducing cable, stand and handling noise.