Shure SM86 Mode D'emploi page 2

OPERATION
Power
The SM86 requires phantom power. This may be supplied to the
microphone from an external power supply (such as the Shure
model PS1A) or directly from preamplifiers, mixers, or consoles
with built-in phantom power. Suitable sources should provide 11 to
52 Vdc phantom voltage.
Impedance
A load impedance of at least 600 Ohms is recommended. The
load may be as low as 150 Ohms, but a reduction in output level and
output clipping level will result.
SPECIFICATIONS
Transducer Type
Condenser (electret bias)
Frequency Response
50 to 18,000 Hz (see Figure 2)
+10
0
–10
29 3
20 50 100
TYPICAL FREQUENCY RESPONSE
FIGURE 2
Polar Pattern
Cardioid (see Figure 3)
250 Hz
500 Hz
1000 Hz
TYPICAL POLAR PATTERN
FIGURE 3
Output Impedance
150 Ohms at 1 kHz
Recommended minimum load impedance: 600 Ohms
Sensitivity (at 1,000 Hz)
Open Circuit Voltage . . . . . . . . . . . . . . .
Output Clipping Level
1000 Ohm Load at 1,000 Hz
Maximum SPL (at 1,000 Hz)
1000 Ω load (1% THD)
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Self-Noise
23 dB typical, A-weighted
4 5 6 7 8 9 2 3 4 5 6 7 8 9
1000 10000
Hz
2500 Hz
6400 Hz
10000 Hz
–50 dBV/Pa (3.15 mV)
(1 Pa = 94 dB SPL)
. . . . . . . . . . . . . . +3 dBV (1.41 V)
Dynamic Range (1000 Ω)
124 dB (maximum SPL to A-weighted noise level)
Signal-to-Noise Ratio
71 dB at 94 dB SPL (IEC 651)*
*S/N ratio is difference between 94 dB SPL and equivalent SPL of self–
noise A-weighted.
Polarity
Positive pressure on diaphragm produces positive voltage on pin
2 relative to pin 3 of the output connector. See Figure 4.
CAPACITOR
(ELECTRET
CONDENSER)
CARTRIDGE
BLACK
PEDANCE CON-
GREEN
Power
Phantom Supply Requirement
Current Drain
Connector
Three–pin (XLR) professional audio
Case
Dark gray enamel-painted steel with matte-finished silver
colored steel grille
20000
Dimensions
See Figure 5
24 mm
(.95 in.)
Net Weight
Net: 278 grams (9.8 oz)
Environmental Conditions
Operating: –18
°
Storage: –29
CERTIFICATION
Eligible to bear CE Marking. Conforms to European EMC
Directive 89/336/EEC. Meets applicable tests and performance
criteria in European Standard EN55103 (1996) parts 1 and 2, for
residential (E1) and light industrial (E2) environments.
FURNISHED ACCESSORIES
Break Resistant Microphone Clip
Microphone Bag
5/8" to 3/8" Thread Adapter
OPTIONAL ACCESSORIES
Phantom Power Supply
Shock Stopper Isolation Mount
Popper Stopper Windscreen
7.6 m (25 ft.) Cable
REPLACEMENT PARTS
147 dB
Screen and Grille Assembly
Cartridge and Shock Mount
Replacement Amplifier Assembly
2
FET IM- DISCRETE
LF RESPONSE
CLASS A
FILTER
VERTER AMPLIFIER
REVERSE
VOLTAGE
PROTECTOR
SM86 BLOCK DIAGRAM
FIGURE 4
. . . . . . . . 11 to 52 Vdc, positive
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
183 mm
(7.2 in.)
OVERALL DIMENSIONS
FIGURE 5
° ° ° °
to 60 C (0 to 135 F) (relative humidity <90%)
° ° °
to 74 C (–20 to 165 F) (relative humidity <80%)
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2 1
RFI FILTER
3
at both pins 2 and 3
5.2 mA
49 mm
(1.92 in.)
A25D
26A13
31A1856
PS1A
A55M, A55HM
A85WS
C25F
RPM226
RPM112
RPM410