Model 545L User Guide
Unidirectional Dynamic Microphone
GENERAL
SPECIFICATIONS
The Shure Model 545L unidirectional dynamic micro- Type
phone 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.
Dynamic
Frequency Response
50 to 15,000 Hz (see Figure 1)
The 545L is ideal for use in critical public address sys-
tems such as those used in political conventions and legisla-
tures, 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.
TYPICAL FREQUENCY RESPONSE
Figure 1
Polar Patern
Cardioid (unidirectional)—uniform with frequency, symet-
rical about axis (see Figure 2)
Features
S
Effective cardioid pickup pattern, uniform to low fre-
quencies, minimizes reverberation and feedback,
discriminates against pickup of nearby performers
and extraneous noise
S
S
S
S
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
S
Rugged and dependable under all operating
conditions
TYPICAL POLAR PATERNS
Figure 2
2003, Shure Incorporated
27B2632 (Rev. 7)
Printed in U.S.A.
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