Shure KSM27 Bedienungsanleitung

27A3138 (AG)

E2001, Shure Incorporated Printed in U.S.A.

User Guide

Le Guide de l’Utilisateur

Bedienungsanleitung

Guía del Usario

Guida dell’Utente

Trademark Notices: The circular S logo, the stylized Shure logo, and the word

“Shure” are registered trademarks of Shure Incorporated in the United States.

“ShureLock” is a trademark of Shure Incorporated in the United States. “Mylar”

is a registered trademark of E.I. duPont de Nemours and Company in the United

States. These marks may be registered in other jurisdictions.

English

SHURE INCORPORATED

KSM27 CARDIOID CONDENSER MICROPHONE

If you have any questions not answered in this booklet, please contact Shure

Applications Engineering at 847-866-2525, Monday through Friday, from 8:00 am to

4:30 pm, CST. In Europe, call 49-7131-72140. Our web address is www.shure.com.

Thank you for selecting the KSM27

Over 75 years of audio experience has contributed to making the KSM27

one of the finest microphones available.

English

GENERAL DESCRIPTION

The ShureRKSM27 is a side-address condenser microphone with a cardioid

polar pattern. Designed for studio use, but rugged enough for live applications, the

KSM27 has an externally biased, 1-inch diaphragm, extremely low self-noise, and

an extended frequency response specially tailored for vocal tracking and

instrument recording.

FEATURES

SCardioid polar pattern – the most commonly used pattern for both studio and

live applications

S1 inch, externally biased, ultra-thin, 2.5 µm, 24 Karat gold-layered, low

mass, MylarRdiaphragm provides superior transient response

SClass A, discrete, transformerless preamplifier for transparency, extremely

fast transient response and no crossover distortion, while minimizing har-

monic and intermodulation distortions

SPremium electronic components and gold-plated internal and external con-

nectors

SSubsonic filter eliminates rumble from mechanical vibration below 17 Hz

SSwitchable 15 dB pad for handling extremely high sound pressure levels

(SPLs)

S3-position switchable low-frequency filter helps reduce unwanted back-

ground noise or counteract proximity effect

SIntegrated three-stage “pop” protection grille reduces plosives and other

breath noise

SInternal shock mount reduces handling and stand noise

PERFORMANCE CHARACTERISTICS

SExtended frequency response

SLow self noise

SExceptional low-frequency reproduction

SHigh output level

SHigh input SPL capability

SNo crossover distortion

SExtremely uniform polar response

SSuperior common mode rejection and suppression of radio frequency inter-

ference

English

APPLICATIONS

The KSM27 provides superior results in any application requiring a high quality

microphone. Some typical applications are listed below.

SVoice-solo, background, voice-over or broadcasting

SAcoustic instruments such as piano, guitar, drums, percussion, strings

SElectric instruments such as guitar and bass

SWind instruments –brass and woodwind

SLow-frequency instruments such as double bass, electric bass, kick drum

SOverhead miking for drums or percussion

SEnsembles –choral or orchestral

SRoom ambience pick-up –guitar amplifier or drums

Note: Both the acoustic environment and microphone placement strongly affect

the sound obtained from miking a source, especially with a high-resolution

microphone like the KSM27. You may need to experiment with microphone

placement and room treatments to achieve the best overall sound for each

application.

OPERATING THE KSM27

Mounting

Use the shock mount to secure the KSM27 to a floor or boom stand by threading

the shock mount onto the microphone stand and inserting/threading the

microphone into the shock mount.

Power

The KSM27 requires phantom power and performs optimally with a 48 Vdc

supply (IEC-268-15/DIN 45 596). However, it will operate with slightly decreased

headroom and sensitivity with supplies as low as 11 Vdc. Most modern mixers

provide phantom power. Phantom power can only be transmitted to the KSM27

through a cable terminated with XLR connectors at each end.

Positioning the Microphone

The front of the KSM27 is marked by the logo. See Figure 1. Position

this side of the microphone toward the sound source to be recorded. The rear of

the microphone is marked by the logo, the low-frequency filter switch and the

15dB attenuation switch.

Cardioid. Picks up sounds directly in front of the microphone and is least

sensitive to those in back. Cardioid is the most commonly used polar pattern in

studio recording and live-sound applications. See Figure 5.

English

Low-frequency

response

switch

15 dB

attenuator

KSM27 FRONT KSM27 BACK

FIGURE 1. KSM27 Front and Back

Selecting Low-Frequency Response

A three-position switch on the back of the KSM27 allows you to adjust the

low-frequency response of the microphone, as shown in Figure 1. The

low-frequency filter settings can be used to reduce wind noise, room noise or

proximity effect.

Flat response. Use this setting when you desire the most natural

reproduction of the source. Since the microphone will reproduce ultra-low

frequencies, the rubber isolated shock mount should be used to reduce

low-frequency mechanical vibrations transmitted through the microphone stand.

Low-frequency cutoff.

Provides an 18 dB-per-octave cutoff at

80 Hz. Helps eliminate floor rumble or

low-frequency room noise from

heating, ventilation, or cooling (HVAC)

systems. Like the low–frequency rolloff,

the cutoff setting may also be used to

compensate for proximity effect or to

reduce low frequencies that make an

instrument sound dull or muddy.

ÑÑÑÑÑÑÑÑ

20 100050 100 98765432

–10

Low-Frequency Cutoff

Low-Frequency Rolloff

Flat Response

Figure 2. Low Frequency Responses

English

Low-frequency rolloff. Provides a 6dB-per-octave rolloff filter at 115Hz.

Use this setting with vocals or instruments to compensate for proximity effect or to

reduce low frequencies that could make an instrument sound dull or muddy.

Setting Attenuation

The attenuation switch on the back of the KSM27 reduces the signal level from

the cartridge by 15 dB without altering the frequency response. This can prevent

extremely high SPLs (ie. close miked drums and guitar cabinets) from overloading

the microphone. To activate attenuation, move the switch to the “-15 dB”position.

0 dB –Use this switch for “quiet”to “normal”sound levels.

-15 dB –This switch position should be used when in close proximity with

extremely loud sound sources such as kick drum, snare drum, or loud guitar

cabinets.

Integral Pop Filter

The KSM27 grille consists of 3 separate mesh layers that act as an integral pop

filter which helps reduce wind and breath noise. Depending on the performer, an

external pop-protection screen or windscreen may be necessary when

close-miking vocalists. (See Figure 3) The low-frequency cutoff filter may also be

effective.

FIGURE 3. PS–6 Popper StoppertPop Filter

(shown here with the KSM44)

Load Impedance

A load impedance of at least 1000 Ωis recommended. When used with typical

modern microphone preamplifiers (rated at about 2500 Ω), the KSM27 provides

higher maximum SPL capability and out put clipping level. WIth the –15 dB pad

engaged, the KSM27 can handle up to 153 dB SPL and output +15 dBV into a 2500

Ωor greater load.

English

SPECIFICATIONS

Cartridge Type Externally Biased Condenser

Frequency Response 20–20,000 Hz

Output Impedance 150 Ω(actual)

Attenuation Switch 0 or 15dB attenuation

Low Frequency

response switch flat; –6 db/octave below 115 Hz; –18 dB/octave below 80 Hz

Phantom Power 48 Vdc±4 Vdc (IEC–268–15/DIN 45 596), positive pins 2 and 3

Current Drain 5.4mA typical at 48 Vdc

Common Mode

Rejection ≥50 dB, 20 Hz to 20 kHz

Polarity Positive pressure on diaphragm produces positive voltage on output

pin 2 relative to pin 3

Dimensions and

Weight 55.9 mm (2.20 in.) maximum body diameter, 156 mm (6.15 in.) long;

642 grams (22.6 oz.) (see fig. 6)

Directional Polar

Pattern Cardioid

Sensitivity (typical, at

1000 Hz; 1Pa = 94

dB SPL) –37 dBV/Pa

Self–noise (typical,

equivalent SPL;

A–weighted

(IEC 651)) 14 dB

Maximum SPL*

2500 Ωload

(Attenuator on)

1000 Ωload

138 (153) dB

133 (148) dB

Output Clipping

Level*

2500 Ω load

1000 Ωload

7 dBV

1 dBV

Dynamic Range

2500 Ωload

1000 Ωload

124 dB

119 dB

Signal to Noise ratio 81 dB

*20 Hz to 20 kHz;THD < 1%. THD of the microphone preamplifier when applied input signal is equivalent to the cartridge output at specified

SPL.

English

RESPONSE GRAPHS

FIGURE 4. TYPICAL FREQUENCY RESPONSE

ÑÑÑÑÑÑÑÑÑÑÑÑÑ

20 200001000 1000050 100 98765432 98765432

+10

–10

60 cm.

150o

120o

150o

120o

180o

30o

60o

90o

30o

60o

90o

FIGURE 5. TYPICAL POLAR PATTERNS

30o

60o

90o

150o

120o

150o

120o

180o

30o

60o

90o

–5 dB

–10 dB

–15 dB

–20 dB

+5 dB

–5 dB

–10 dB

–15 dB

–20 dB

+5 dB

250

500 2500

10K

6400

6.151

2.000

2.085 5.909

FIGURE 6. DIMENSIONS

English

CERTIFICATION

Eligible to bear CE Marking; Conforms to European EMC directive 89/336/EEC.

Meets applicable tests and performance criteria found in European Professional

Audio Products EMC Standard EN 55103 (1996); Part 1 (Emissions) and Part 2

(Immunity). The KSM27 is intended for use in environments E1 (residential) and E2

(Light Industrial) as defined in European standard EN 55103. EMC conformance

is based on the use of shielded interconnecting cable.

N 108

FURNISHED ACCESSORIES

ShureLocktRubber Isolated Shock Mount A27SM. . . . . . . . . . . . . . . . . . . . .

Protective Velveteen Pouch A27VB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

OPTIONAL ACCESSORIES

ShureLocktBlack Swivel Adapter A32M. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Aluminum Carrying Case A32SC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Windscreen A32WS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Popper StoppertPop Screen PS–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Padded, Zippered Carrying Bag A32ZB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

REPLACEMENT PARTS

Rubber Rings for Shock Mount (contains four) RPM642. . . . . . . . . . . . . . . . . .

Replacement Foam for Carrying Case 29A2284. . . . . . . . . . . . . . . . . . . . . . . .

SERVICE

For additional microphone service or parts information, please contact Shure’s

Service department at 1-800-516-2525. Outside the United States, please contact

your Authorized Shure Service Center.

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