SHURE 545L
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Model 545L User Guide Unidirectional Dynamic Microphone

GENERAL The Shure Model 545L unidirectional dynamic microphone is a low-impedance unit designed for instrument or voice pickup in public address applications. With its attached cable, the microphone is suitable for mounting on an optional A25B swivel adapter, on a fixed pipe or flexible gooseneck, or for handheld use. The 545L is ideal for use in critical public address systems such as those used in political conventions and legislatures, hotels, public auditoriums, stadiums, and churches. The microphone has an exceptionally uniform pickup pattern that provides an excellent solution to feedback problems in reverberant locations, permits best utilization of space in small studios, facilitates orchestral placement, and provides effective rejection of unwanted noises. Features

SPECIFICATIONS Type Dynamic Frequency Response 50 to 15,000 Hz (see Figure 1)

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Effective cardioid pickup pattern, uniform to low frequencies, minimizes reverberation and feedback, discriminates against pickup of nearby performers and extraneous noise Excellent reproduction of music and voice Shock-mounted cartridge for quiet operation Low impedance for unlimited cable length Provided with very flexible, small diameter shielded cable Rugged and dependable under all operating conditions

TYPICAL FREQUENCY RESPONSE Figure 1 Polar Patern Cardioid (unidirectional)�uniform with frequency, symetrical about axis (see Figure 2)

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TYPICAL POLAR PATERNS Figure 2

2003, Shure Incorporated 27B2632 (Rev. 7)

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Printed in U.S.A.