Shure SM86 User manual

Model SM86 User Guide

27B3143 (Rev. 2)

Printed in U.S.A.

SM86

CARDIOID CONDENSER MICROPHONE

The Shure SM86 is a unidirectional (cardioid) condenser vocal

microphone for professional use in live performance. An extremely

rugged microphone, the SM86 withstands the rigors of touring

while delivering studio-quality sound. The tailored frequency

response of the SM86 reproduces vocals with clarity. A cardioid

pickup pattern isolates the main sound source while minimizing

unwanted background noise. The built-in three-point shock mount

minimizes handling noise, and a two-stage pop ﬁ lter reduces

wind and breath “pop” noise. The SM86 is an excellent selection

For use with both stage monitors and personal in-ear monitors.

Features:

Condenser cartridge for studio quality sound

Tailored frequency response for a clear reproduction of

vocals

Rugged construction withstands the rigors of touring

sound

Cardioid polar pattern minimizes unwanted background

noise

Excellent choice for stage monitors and personal in-ear

monitors

Built-in three-point shock mount minimizes handling noise

Two-stage “pop” ﬁ lter reduces wind and breath noise

PROXIMITY EFFECT

Unidirectional microphones, like the SM86, progressively boost

bass frequencies up to 15 dB as the microphone gets closer to

the sound source. This phenomenon, known as proximity effect,

can be used to create a warmer, more powerful sound. To prevent

excessive or “boomy” low frequency sound during close-up use,

the SM86 bass response gradually rolls off. This provides greater

control and helps the user take advantage of proximity effect.

•

APPLICATIONS AND PLACEMENT

The SM86 is ideal for close-up vocals and can be held in the hand

or mounted on a stand. Some of the most common applications

and placement techniques are listed in the following table. Keep

in mind that microphone technique is largely a matter of personal

taste—there is no one “correct” microphone position.

SUGGESTED MICROPHONE

PLACEMENT

TONE QUALITY

Lips less than 15 cm (6 in.) away or

touching the windscreen, on axis to

microphone.

Robust sound, emphasized

bass, maximum isolation from

other sources.

15 to 60 cm (6 in. to 2 ft.) away from

mouth, just above nose Height.

Reduced bass.

More than 60 cm (2 ft.) away.

Thinner, more distant sound;

noticeable levels of ambient

noise.

STAGE MONITOR & P.A. LOUDSPEAKERS

PLACEMENT

Place the stage monitor directly behind the microphone (see

Figure 1). Locate the P.A. loudspeakers so that they point

away from the rear of the microphone. With the speakers lo-

cated in these positions, the possibility of feedback is greatly

reduced. Always check the stage setup before a performance

to ensure optimum placement of microphone and monitors.

180

°

90

°

0

°

90

°

CARDIOID MICROPHONE POSITIONING

FIGURE 1

GENERAL RULES FOR MICROPHONE USE

Aim the microphone toward the desired sound source

and away from unwanted sources.

Locate the microphone as close as practical to the desired

sound source.

Work close to the microphone for extra bass response.

Use only one microphone per sound source.

Locate microphones at least three times as far from other

microphones as from the sound source.

Use as few microphones as practical.

Place microphones far from sound-reﬂ ecting surfaces.

Add a windscreen when using the microphone outdoors.

Avoid excessive handling to minimize mechanical noise.

1.

2.

3.

4.

5.

6.

7.

8.

9.

MICROPHONE

P.A.

LOUDSPEAKERS

STAGE

MONITOR

SOUND

SOURCE

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 preampliﬁ ers, 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 10

0

9

8

7

6

5

4

3

2

8

7

6

5

4

3

2

+10

0

–10

Hz

B

d

9

TYPICAL FREQUENCY RESPONSE

FIGURE 2

Polar Pattern

Cardioid (see Figure 3)

10000 Hz

1000 Hz

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 Ω 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.

BLAC

K

REVERSE

VO

LTA

GE

PROTEC

TO

R

CA

PA

CITO

R

(ELECTRET

CONDENSER)

CARTRIDGE

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N

RFI FI

LT

ER

1

2

3

FET

IM

-

PEDANCE CON-

VERTER

LF RESPONS

E

FIL

TER

FILTERFIL

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-ﬁ nished 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

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

5/8” to 3/8” Thread Adapter . . . . . . . . . . . . . . . . . . . . . . . 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . .

C25

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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

Shure SM86 User manual

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