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SPECIFICATIONS
Output Level (at 1000 Hz)
Low lmpedance
....................
Open Circuit Voltage
-
78 dB* (.I25 mV)
....................................
Power Level
-57 d B * *
Type
Dynamic
Frequency Response
50 to 15,000 Hz (see Figure 1)
FREQUENCY
RESPONSE
FIGURE 1
Polar Pattern
Cardioid (unidirectional) pattern-Effective
rejection of
sound at the rear of the microphone is uniform at all
frequencies, while front pickup characteristics are uniform
about the axis (see Figure 2)
I
TYPICAL DIRECTIONAL PATTERN
I
FIGURE 2
Impedance
DUAL. Low: Microphone rating impedance is 150 ohms
(270 ohms actual) for connection to microphone inputs
rated at 19 to 300 ohms.
High: Microphone impedance is "High" for connection to
high-impedance microphone inputs. Selection of impedance
made by choice of cable leads connected at equipment
end of cable (see section on lmpedance Selection).
POSITIVE PRESSIRE
PRDWCES POSITIVE
VOLTAGE ON PIN
I
OR PIN
3
A W M N O L MCOF
TYPE PLUG7
-
-
CABLE-PLUG
C A R T R ~ E GROW
CASEOROUND
ASSEMBLY
MODEL 545
TRANSFWYER?.,
RED
AUMNOL MCOF
!
111:
TYPE c w m c T m
CABLE- PLUG
CARTRIDGE
GROUND
CASE
GROUND
MODEL 5 4 5 s
INTERNAL CONNECTIONS
FIGURE 3
WELL
High lmpedance
....................
Open Circuit Voltage
-55 dB* (1.76 mV)
'0 dB = 1 volt per microbar
* * 0 dB
=
1 milliwatt per 10 microbars
Switch
Model 545
-
None
Model 5458
-
Built in On-Off switch to control micro-
phone circuit. The switch is an integral part of the con-
nector assembly and is a slide-to-talk locking type switch
Cable
4.6 meter (15 ft) three-conductor shielded with Amphenol
MC4M connector on the microphone end
Case
Chrome-plated die casting with black ARMO-DUR8q grille
and stainless steel screen
Dimensions
See Figure 4
Net Weight
Model 545
-
255 grams (9 02.)
Model 5458
-
425 grams (15 02.)
L
31.8
mm
11-114 IN)
MODEL 545
Z3.8
mm llS/lB IN.!
MODEL 5 4 5 5
OVERALL
DIMENSIONS
FIGURE 4
FURNISHED ACCESSORY
545
545s
Swivel Adapter ................................ A25B
OPTIONAL ACCESSORIES
Line Matching Transformer
..........
A95 Series
A95 Series
Vibration-Isolation Stand
..............
S39A
S39A
Desk Stand
......................................
S 3 3 S40A
S37A, S40A
Quick Disconnect Adapter
............
A45
A47
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Windscreen
A2WS
A2WS
Carrying Case . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AC54
AC54S
REPLACEMENT PARTS
Dvnamic Cartridae .......................... R45
R45
cable and Plug assembly
..............
C56
C56
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sw~tch
RK32S
................................
Case Assembly
RK42C
RK41 C
. . . . . . . . . . . . . . . . . . . . . .
Connector Assembly
RK33CA
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cable Connector
RK117P
RK117P
. . . . . .
....................
Plug Element
. . .
RK31 P
RK31 P
GUARANTEE
This Shure product is guaranteed in normal use to be free
from electrical and mechanical defects for a period of one
year from date of purchase. Please retain proof of purchase
date. This guarantee includes all parts and labor. This guar-
antee is in lieu of any and all other guarantees or warranties,
express or implied, and there shall be no recovery for any
consequential or incidental damages.
SHIPPING INSTRUCTIONS
Carefully repack the unit and return it prepaid to:
Shure Brothers Incorporated
Attention:
Service Department
1501 West Shure Drive
Arlington Heights, Illinois 60004
If outside the United States, return the unit to your dealer
or Authorized Shure Service Center for repair. The unit will
be returned to you prepaid.
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