Model 512 User Guide
27C8114 (Rev. 7) Printed in U.S.A.
©2010, Shure Incorporated
GENERAL
Shure Model 512 combines an efficient “open-air” headphone
with a close-talking dynamic microphone. The unit is unobtrusive,
durable, comfortable, and provides a wide frequency range.
The 512 was designed for sports and news announcing, intercom-
munications systems, and special events remote broadcasting. It
offers convenient hands-free operation, and a lightweight frame
to reduce user fatigue. The unidirectional pickup pattern reduces
unwanted background noise, permitting its use in noisy environ
-
ments. The microphone characteristics are tightly controlled
resulting in consistent response and output, and the headphone
response is tailored to enhance voice intelligibility.
The headband easily adjusts to fit a variety of head sizes and hair-
styles, and the microphone boom can be adjusted to accurately
place the microphone cartridge at the corner of the user’s mouth.
The microphone is supplied with a foam windscreen to reduce
explosive “popping” sounds, and a cable clip to secure the cable
to clothing.
SPECIFICATIONS
MICROPHONE
Type
Dynamic, close-talking
Frequency Response (at 8 mm 5/16 in.)
50 to 15,000 Hz
20 200001000 1000050 100
98765432 98765432
+10
0
–10
Hz
dB
-20
+20
Polar Pattern
Cardioid (unidirectional) response - uniform with frequency,
symmetrical about axis.
150°
120°
150°
120°
180°
30°
60°
90°
30°
60°
0
90°
–10 dB
–20 dB
–15 dB
–5 dB
1000 Hz
4000 Hz
500 Hz
Impedance
Microphone rating impedance is 150 Ohms (200 Ohms actual)
for connection to microphone inputs rated at 19 to 300 Ohms.
Output Level (closed-talked at 1,000 Hz)
Open-circuit voltage -47.0 dB (4.5 mV)
0 dB=1 volt per 100 microbars
Power Level -66.0 dB
0 dB=1 milliwatt per 10 microbars
Hum Sensitivity (typical)
38.4 dB equivalent SPL in 1 millioersted field
Polarity
Positive pressure on diaphragm produces positive voltage on
red lead and pin 2 of connector
.
HEADPHONE
Type
Dynamic, open-air, left side only
Frequency Response
100 to 10,000 Hz, tailored for voice intelligibility.
20 200001000 1000050 100
98765432 98765432
+10
0
–10
Hz
dB
-20
+20
Impedance
300 Ohms at 1,000 Hz
SHURE Incorporated http://www.shure.com
United States, Canada, Latin America, Caribbean:
5800 W. Touhy Avenue, Niles, IL 60714-4608, U.S.A.
Phone: 847-600-2000 U.S. Fax: 847-600-1212 Int’l Fax: 847-600-6446
Europe, Middle East, Africa:
Shure Europe GmbH, Phone: 49-7131-72140 Fax: 49-7131-721414
Asia, Pacific:
Shure Asia Limited, Phone: 852-2893-4290 Fax: 852-2893-4055
Polarity
Positive voltage on cable conductor produces positive pres-
sure.
Output Level (at 1,000 Hz)
94 dB SPL at ear with 1 mW input
Internal Connections
RED
CODED
TERMINAL
BLACK
CODED
TERMINAL
CODED
TERMINAL
SHIELD
RED
BLACK
MICROPHONE
SHIELD
WHITE
RECEIVER
SLEEVE
TIP
1
2
3
MATERIAL
Cable
2.1 m (7 ft.) attached cables: one 2-conductor shielded with
black 3-pin XLR connector (microphone) and one single-con-
ductor shielded with 2-circuit phone plug (headphones).
Headset
Stainless steel and thermoplastic with foam earpads.
Dimensions
12.7 mm
(1/2 in.)
52 mm
(2 in.)
12 mm
(15/32 in.)
14 mm
(9/16 in.)
15.9 mm
(5/8 in.)
203 mm
(8 in.)
MAX 180 mm MIN 130 mm
(7 – 3/32 in. — 5 – 1/8 in.)
Net Weight
186 grams (6.5 oz.) including connectors
USING THE MICROPHONE
Snap the microphone boom into the rotating holder below the left
earpiece. Put on the headset and adjust the earpads to the most
comfortable position. The headset is designed for use with the mi-
crophone mounted on the left side. Slide and twist the microphone
boom and rotate its holder until the microphone is located as close
as possible to the left corner of the mouth (not directly in front).
REPLACEMENT PARTS
Microphone Cartridge . . . . . . . . . . . . . . . . . . . . . .R93
Headphone Cartridge . . . . . . . . . . . . . . . . . . . . . .90FA2600
Pop Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90RX1371
Foam Earpad . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49A78A
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