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2 2 2 HARTREY AVE.. EVANSTON. IL. 6 0 2 0 4 U.S.A.
MODELS 580SA
AREA CODE 3 1 2 / 8 6 6 . 2 2 0 0
.
CABLE: SHUREMICRO
SHEET
and 580SB UNIDYNEB A
TWX: 9 1 0 - 2 3 1 . 0 0 4 8
TELEX: 7 2 - 4 3 8 1
1
DATA
I
UNIDIRECTIONAL DYNAMIC MICROPHONES
GENERAL
The Model 580 Series UNIDYNEB A Microphones are
moving coil dynamic units built to provide wide range
reproduction of music and voice and featuring an ex-
cellent unidirectional microphone pickup pattern. These
unidirectional microphones are ideal for quality public
address, theater-stage sound systems, recording, and
other sound reinforcement applications.
Microphone Features:
rn
Exceptional true cardioid pickup pattern: sym-
metrical about axis and uniform at all frequen-
cies-providing
highly effective suppression of
feedback
rn
Uniform shaped response, particularly suitable
for the professional entertainer
rn
A built-in On-Off switch with provisions for lock-
ing switch in its On position
rn
Versatility-for
use in the hand or on a stand-
for use indoors or outdoors
rn
Dependability under all operating conditions
The Model 580 Microphones are supplied with an
adjustable swivel adapter which permits the micro-
phone to be tilted through 90" from vertical to hori-
zontal. This swivel also allows for "quick-disengage"
for use as a hand microphone.
Model 580SA is high impedance for connection to
high-impedance microphone inputs.
Model 580SB is low impedance for connection to
microphone inputs rated at 19 to 300 ohms. The low-
impedance microphone is recommended where long
cable lengths are required or under conditions of se-
vere hum disturbance. The permissible cable length is
practically unlimited since neither response nor level
is appreciably affected by long cables. Shure Model
A95 Series Line Matching Transformers are available
for use in those cases where a low-impedance micro-
phone line is desirable but the associated amplifier
has a high-impedance input. These transiormers pro-
vide a proper impedance match between a 19 to 300
ohm microphone line and a high-impedance input and
are available with various input and output connectors.
SPECIFICATIONS
TY pe
Dynamic
Frequency Response
50 to 13,000 Hz (see Figure 1)
+20
m
-
+I0
-
Y
Z
g
O
L
Y
5
-I0
Y L
-20
2 0
Y)
1 0 0
l U m 0
1 0 . 0 0 0
20.003
FREWENCY I N HERTZ
TYPICAL FREQUENCY RESPONSE
FIGURE 1
Polar Pattern
Cardioid (unidirectional)-uniform
with frequency,
symmetrical about axis (see Figure
2)
FIGURE 2
Impedance
Model 580SA:
Microphone impedance is "High" for
connection to high-impedance microphone inputs.
Model 580SB:
Microphone rating impedance is 150
ohms (160 ohms actual) for connection to micro-
phone inputs rated at 19 to 300 ohms.
Output Level (at 1,000 Hz)
580SA
580SB
Open Circuit Voltage* . . .
. .
-57.5 dB
-80.0 dB
(1.33 mV)
(.I00 mV)
Power Level
* *
.
. . . .
. . . . .
.
.
-58.0 dB
* O dB = 1 volt per microbar
* * O dB
= 1 milliwatt per 10 microbars
Switch
Built-in On-Off switch with lockplate. To lock switch
in On position, remove screw on lockplate and turn
lockplate 180". Reassemble and tighten screw.
Cartridge Shock Mount
Internal rubber vibration-isolator
Cable
Model 580SA: 4.6m (15 ft), nondetachable, single-
conductor shielded
Model 580SB:
4.6m (15 ft), nondetachable, two-
conductor shielded
Copyright 1979, Shure Brothers Inc
27A325 (SK)
U. S .
Patents
3 , 1 3 2 , 7 1 3
and 3,240,883
Printed
in U.S.A.
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