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 Intl 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
The microphone circuit of the 527A is normally closed
when the microphone switch button is in the normal position.
The microphone switch may be rewired to have a normally
open microphone circuit. To modify the 527A for a normally
open circuit, proceed as follows:
1. Remove the three No. 6 Phillips self-threading screws
from the back of the microphone case.
2. Separate the case front and back, then remove the
microphone switch button.
3. Unsolder or clip the WHITE cable lead and the RED
transformer lead from the switch solder lug (see
Figure 2).
4. Solder the WHITE cable lead and the RED transformer
lead to the lower switch solder lug.
5. Place the microphone switch button in the normal posi-
tion on the case front. Place the case back on the case
front and firmly press the two sections together. Fasten
the case back to the case front with the screws previ-
ously removed.
OPERATION
The 527A will operate satisfactorily under all ordinary con-
ditions of humidity, heat, and cold. Dropping the microphone
or other severe mechanical shocks should be avoided.
SPECIFICATIONS
Type
Dynamic
Frequency Response
200 to 5,000 Hz
Output Level
(at 1,000 Hz)
-15
±
4 dBV/100
μ
bars
Impedance
(at 1,000 Hz)
21 k
Ω
minimum
Hum Sensitivity
30
±
5 dB equivalent SPL per 1 mOe
Switch
Double-pole, single-throw, leaf-type
Cable
Attached, 1.5 m (5 ft.), 3-conductor (1 shielded),
coiled-retractable, neoprene-jacketed
Dimensions
OVERALL DIMENSIONS
FIGURE 3
Net Weight
292 g
Certification
Conforms to European Union directives, eligible to bear
CE marking; meets European Union EMC Immunity Re-
quirements (EN 50 082-1, 1992); RF radiated (IEC 801-3);
ESD (IEC 801-2); EFT (IEC 801-4).
FURNISHED ACCESSORY
Mounting Bracket (3 in kit). . . . . . . . . . . . . . . RK6MB
REPLACEMENT PARTS
Cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . R131
Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . RK319S
Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C12C
Transformer . . . . . . . . . . . . . . . . . . . . . . . . . 90A4319
For additional service or parts information, please contact
Shure's Service department at 1-847-600-8699. Outside the
United States, please contact your authorized Shure Ser-
vice Center.
20
20000
1000
10000
50 100
9
8
7
6
5
4
3
2
9
8
7
6
5
4
3
2
+10
0
–10
Hz
dB
-20
+20
93.7 mm
(3-11/16 in)
66.7 mm
(2-5/8 in)
55.8 mm
(1-49/64 in)
9.5 mm (3/8 in)
19.1 mm (3/4 in)
0.8 mm (1/32 in)
1.6 mm (1/16 in)
2.4 mm (3/32 in)
