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Operation, Specifications, Furnished accessories – Shure SM86 User Manual

Page 2: Optional accessories, Replacement parts

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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)

20

20000

1000

10000

50 100

9

8

7

6

5

4

3

29

8

7

6

5

4

3

2

+10

0

–10

Hz

dB

9

TYPICAL FREQUENCY RESPONSE

FIGURE 2

Polar Pattern

Cardioid (see Figure 3)

2500 Hz
6400 Hz

10000 Hz

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

–50 dBV/Pa (3.15 mV)

. . . . . . . . . . . . . . . .

(1 Pa = 94 dB SPL)

Output Clipping Level

1000 Ohm Load at 1,000 Hz

+3 dBV (1.41 V)

. . . . . . . . . . . . . .

Maximum SPL (at 1,000 Hz)

1000

load (1% THD)

147 dB

. . . . . . . . . . . . . . . . . . . . . . . . . . .

Self-Noise

23 dB typical, A-weighted

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.

BLACK

REVERSE
VOLTAGE

PROTECTOR

CAPACITOR
(ELECTRET
CONDENSER)
CARTRIDGE

GREEN

RFI FILTER

1

2

3

FET IM-

PEDANCE CON-

VERTER

LF RESPONSE

FILTER

DISCRETE

CLASS A

AMPLIFIER

SM86 BLOCK DIAGRAM

FIGURE 4

Power

Phantom Supply Requirement

11 to 52 Vdc, positive

. . . . . . . .

at both pins 2 and 3

Current Drain

5.2 mA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Connector

Three–pin (XLR) professional audio

Case

Dark gray enamel-painted steel with matte-finished silver
colored steel grille

Dimensions

See Figure 5

24 mm

(.95 in.)

49 mm

(1.92 in.)

183 mm

(7.2 in.)

OVERALL DIMENSIONS

FIGURE 5

Net Weight

Net: 278 grams (9.8 oz)

Environmental Conditions

Operating: –18

°

to 60

°

C (0

°

to 135

°

F) (relative humidity <90%)

Storage: –29

°

to 74

°

C (–20

°

to 165

°

F) (relative humidity <80%)

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

A25D

. . . . . . . . . . . . . . . .

Microphone Bag

26A13

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5/8” to 3/8” Thread Adapter

31A1856

. . . . . . . . . . . . . . . . .

OPTIONAL ACCESSORIES

Phantom Power Supply

PS1A

. . . . . . . . . . . . . . . . . . . . . . . .

Shock Stopper

Isolation Mount

A55M, A55HM

. . . . . . . . .

Popper Stopper

Windscreen

A85WS

. . . . . . . . . . . . . . . .

7.6 m (25 ft.) Cable

C25F

. . . . . . . . . . . . . . . . . . . . . . . . . . . .

REPLACEMENT PARTS

Screen and Grille Assembly

RPM226

. . . . . . . . . . . . . . . . . .

Cartridge and Shock Mount

RPM112

. . . . . . . . . . . . . . . . . . .

Replacement Amplifier Assembly

RPM410

. . . . . . . . . . . . .