INPUT TYPE
WIRE
COLOR
FUNCTION
XLR
CONNECTOR
1/4 IN.
PHONE
PLUG
WHITE
AUDIO +
PIN 2
TIP
BALANCED
GREEN
AUDIO –
PIN 3
RING
SHIELD
CHASSIS GROUND
PIN 1
SLEEVE
CABLE-TO-CONNECTOR WIRING
TABLE 1
The 527B is wired for balanced-line operation and is
recommended for use where long cable lengths are re-
quired, or conditions where severe hum pickup may exist.
The 527B microphone can be fed directly into a standard
low-impedance amplifier, or a Shure A95 Series Line
Matching Transformer can be used for coupling the 527B
to the input of a high-imedance amplifier. A two-conductor
shielded cable can be used for extending only the micro-
phone circuit. If both the microphone circuit and the re-
mote circuit are to be extended, a four-conductor cable
having two shielded conductors for the microphone
should be used.
The microphone circuit of the 527B is normally open
when the microphone switch button is in the normal posi-
tion. The microphone switch may be rewired to have a nor-
mally shorted microphone circuit. To modify the 527B for
a normally shorted 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 from the upper
(from the bottom of the microphone) switch solder lug
(see Figure 2).
4.
Solder the WHITE cable lead to the lower switch sol-
der lug (containing the YELLOW lead to the micro-
phone cartridge).
5.
Place the microphone switch button in the normal
position 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
previously removed.
OPERATION
The 527B will operate satisfactorily under all ordinary
conditions of humidity, heat, and cold. Dropping the micro-
phone or other severe mechanical shocks should be
avoided.
SPECIFICATIONS
Type
Dynamic
Frequency Response
300 to 5,000 Hz (see Figure 3)
0
+10
9
8
7
6
5
4
3
2
9
8
7
6
5
FREQUENCY IN HERTZ
20000
10000
1000
4
3
2
100
–10
50
20
RELA
TIVE RESPONSE IN dB
TYPICAL FREQUENCY RESPONSE
FIGURE 3
Output Level
(at 1,00 Hz)
Open Circuit Voltage*
–33 dB
. . . . . . . . . . . . . . . . . . .
(22 mV)
Power Level**
–52 dB
. . . . . . . . . . . . . . . . . . . . . . . . . .
*0 dB = 1 V per 100
µ
bars
**0 dB = 1 mW per 10
µ
bars
Impedance
Microphone rating impedance is 150
Ω
(200
Ω
actual) for connection to microphone inputs rated at
19 to 300
Ω
Switch
Double-pole, single-throw, leaf-type
Cable
Attached, 1.8 m (6 ft), 4-conductor (2 shielded),
neoprene-jacketed
Dimensions (See Figure 4)
3.688 in.
[9.37 cm]
1.765 in.
[4.48 cm]
.375 in.
[.95 cm]
.750 in.
[1.91 cm]
.093 in.
[.24 cm]
.062 in.
[.16 cm]
.032 in.
[.08 cm]
2.625 in.
[6.67 cm]
OVERALL DIMENSIONS
FIGURE 4
Net Weight
337 g (11.9 oz)
Packaged Weight
535 g (18.8 oz)
FURNISHED ACCESSORY
Mounting Bracket (3 in kit)
RK6MB
. . . . . . . . . . . . . .
REPLACEMENT PARTS
Cartridge
R131
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Switch
RK319S
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cable
C29C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
