Shure KSM44A Bedienungsanleitung

KSM44A

Printed in U.S.A.

www.shure.com

27A32158 (Rev. 1)

User Guide

Le Guide de l’Utilisateur

Guia del Usuario

Guida dell’Utente

Bedienungsanleitung

Руководство

пользователя

取扱説明書

사용자 안내서

用户指南

Manual do Usuário

MULTIPLE POLAR PATTERN

CONDENSER MICROPHONE

Thank you for selecting the KSM series from Shure.

Over 85 years of audio experience has contributed to making this one of the finest microphones

available.

If you have any questions not answered in this guide, please contact Shure Applications Engineering at

847-600-8440, Monday through Friday, from 8:00 am to 4:30 pm, CST. In Europe, call 49-7262-92490.

In Asia, call 852-2893-4290. Our web address is www.shure.com.

SHURE INCORPORATED

General Description

The Shure®KSM44A is a premium, large-diaphragm, side-address condenser microphone with multiple

polar pattern options (cardioid, omnidirectional, bidirectional). The refined and sophisticated design of

the KSM44A features externally biased, dual 1-inch diaphragms, extensive internal pop filtering and

Prethos®advanced preamplifier technology for a ground-breaking threshold minimum of self-noise. The

KSM44A is the premier choice for the highest level of professional studio and stage performance.

Performance Characteristics

• Extremely uniform polar response

• Extended frequency response

• Minimal self-noise

• Exceptional low-frequency reproduction

• Able to withstand high SPLs

• High output level

• No crossover distortion

• Superior common-mode rejection and suppression of radio frequency interference (RFI)

Features

• Multiple polar patterns (cardioid, omnidirectional and bidirectional) for maximum flexibility in a wide

variety of recording applications

• Dual 1 inch, externally biased, ultra-thin, 2.5 μm, 24 Karat gold-layered, low mass, Mylar®

diaphragms provide superior frequency response

• Class A, discrete, transformerless preamplifier for transparency, extremely fast transient response

and no crossover distortion. Minimizes harmonic and intermodulation distortions

• Premium electronic components and gold-plated internal and external connectors

• Subsonic filter eliminates rumble from mechanical vibration below 17 Hz

• Switchable 15 dB pad for handling extremely high sound pressure levels (SPLs)

• 3-position switchable low-frequency filter helps reduce unwanted background noise or counteract

proximity effect

• Integrated three-stage "pop" protection grille reduces plosives and other breath noise

• Internal shock mount reduces handling and stand noise

Applications

The KSM44A provides superior results in any application requiring a high quality microphone. Some

typical applications are listed below.

• Vocals (studio or live)

• Acoustic instruments such as piano, guitar, drums, percussion, strings

• Brass and woodwind instruments

• Low-frequency instruments such as double bass, electric bass, kick drum

• Overhead miking for drums or percussion

• Choral or orchestral ensembles

• Room ambience or stereo miking

Acoustic environments and microphone placements strongly affect the sound obtained from miking a

source, especially with a high-resolution microphone like the KSM44A. You may need to experiment with

placement, room treatments, and polar pattern to achieve the best overall sound for each application.

Use the supplied ShureLock® rubber suspension mount to secure the microphone to a floor or boom

stand.

Important: Thread the knurled locking ring securely to the base of the microphone. Do not overtighten.

Suspension Mount

Power Requirements

This microphone requires phantom power and performs best with a 48 V DC supply (IEC-61938).

However, it will operate with slightly decreased headroom and sensitivity with supplies as low as 11

Vdc.

Most modern mixers provide phantom power. You must use a balanced microphone cable: XLR-to-

XLR or XLR-to-TRS.

Positioning

Position the front of the microphone, with SHURE®,

towards the desired sound source. Position the rear

of the microphone, with the vintage circle S logo,

towards any unwanted sound sources.

Selecting a Polar Pattern

The three position switch on the front of the microphone sets the polar response pattern. This chang-

es the microphone's sensitivity to sounds coming from different angles.

Cardioid. Picks up sound directly in front of the microphone and is least sensitive to those in

back. This is most commonly used in studio recording and live-sound applications.

Omnidirectional. Picks up sounds from all directions. Best for picking up room ambience and

for miking several sources simultaneously, such as an ensemble or multiple singers. The om-

nidirectional polar pattern exhibits no proximity effect.

Bidirectional. Picks up equally from the front and back of the microphone while reject-

ing sounds from the sides. Often used for stereo recording (such as mid-side and Blumlein

techniques).

Note: As with all bidirectional microphones, sounds picked up from the back will be out of

polarity with the source. Those from the front are in polarity with the source.

CAUTION: The switch produces mechanical noise which, when amplified, may damage the loudspeak-

ers. Turn down any loudspeakers or mute the microphone at the mixing console before using the switch.

Operation

Selecting Low-Frequency Response

A three-position switch on the back of the microphone lets you adjust the low-frequency response.

Use the low-frequency filter to reduce wind noise, room noise, or proximity effect.

Flat response. Provides the most natural sound in most applications.

Low frequency cutoff. Provides an 18 dB-per-octave

cutoff at 80 Hz. Helps eliminate floor rumble and low-fre-

quency room noise from heating and air conditioning sys-

tems. This setting may also be used to compensate for

proximity effect or to reduce low frequencies that make an

instrument sound dull or muddy.

Low frequency rolloff. Provides a 6 dB-per-octave roll-

off filter at 115 Hz. Use this to compensate for proximity ef-

fect or to reduce low frequencies that could make an instru-

ment sound dull or muddy.

Setting Attenuation

The attenuation switch lets you reduce the signal level without altering the frequency response. This can

prevent extremely loud sounds from overloading the microphone circuitry.

0 dB For "quiet" to "normal" sound levels.

-15 dB For use with extremely loud sound sources such as drums, horns, or loud guitar cabinets.

Load Impedance

Maximum SPL capability, output clipping level, and dynamic range vary with the input load impedance

of the preamplifier to which you connect the microphone. Shure recommends a minimum input load

impedance of 1000 Ω. Most modern microphone preamplifiers meet this requirement. Higher impedance

results in better performance for these specifications.

Integral Pop Filter

The microphone grille consists of 3 separate mesh layers that

act as an integral pop filter. This helps reduce wind and breath

noise. Depending on the performer, an external pop-protection

screen or windscreen may be necessary when close-miking

vocalists.

20 100050 100

98765432

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Flat Response

Low Frequency Cuto

Low Frequency Rollo

Specifications

Cartridge Type

Dual-Diaphragm, Externally-Biased Condenser

Polar Pattern

selectable

Cardioid, Omnidirectional, Bidirectional

Frequency Response

20 to 20,000 Hz

Output Impedance

50 Ω

Sensitivity

open circuit voltage, @ 1 kHz, typical

Cardioid Omnidirectional Bidirectional

–31 dBV/Pa[1] (29.8 mV) –37 dBV/Pa[1] (14.8 mV) –36 dBV/Pa[1] (16.8 mV)

Maximum SPL

1 kHz at 1% THD[2]

Cardioid Omnidirectional Bidirectional

PAD OFF 2500 Ω load 134 dB150 dB 140 dB152 dB 139 dB151 dB

1000 Ω load 131 dB147 dB 137 dB149 dB 136 dB148 dB

PAD ON 2500 Ω load 134 dB150 dB 140 dB152 dB 139 dB151 dB

1000 Ω load 131 dB147 dB 137 dB149 dB 136 dB148 dB

Signal-to-Noise Ratio[3]

Cardioid Omnidirectional Bidirectional

90 dB 88 dB 86.5 dB

Dynamic Range

@ 1 kHz

Cardioid Omnidirectional Bidirectional

2500 Ω load 130 dB 134 dB 131 dB

1000 Ω load 127 dB 131 dB 128 dB

Clipping Level

20 Hz to 20 kHz, 1% THD

2500 Ω load 9 dBV

1000 Ω load 6 dBV

Self Noise

equivalent SPL, A-weighted, typical

Cardioid Omnidirectional Bidirectional

4 dB SPL-A 6 dB SPL-A 7.5 dB SPL-A

Common Mode Rejection

10 to 100,000 kHz

≥50 dB

Attenuator Switch

-15 dB

Low-Frequency Filter Switch

Flat, –6 dB/octave below 115 Hz, or –18 dB/octave below 80 Hz

Connector

Three-pin professional audio (XLR), male, balanced

Polarity

Positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3

Power Requirements

11–52 V DC[4] phantom power (IEC-61938) 5.8 mA, maximum

Net Weight

492 g (17.4 oz.)

[1] 1 Pa=94 dB SPL

[2]THD of microphone preamplifier when applied input signal level is equivalent to cartridge output at specified SPL

[3]S/N ratio is the difference between 94 dB SPL and equivalent SPL of self noise, A-weighted

[4]All specifications measured with a 48 Vdc phantom power supply. The microphone operates at lower voltages, but with

slightly decreased headroom and sensitivity.

ACCESSORIES AND PARTS

Furnished Accessories

ShureLock®Cristal Elastic Shock Mount A44ASM

ShureLock®Cristal Swivel Adapter A44AM

Carrying Case AK44C

Protective Velveteen Pouch A44AVB

Suspension Shock Mount Elastic Cord, Cristal

(contains two)

RK383

Optional Accessories

Windscreen A32WS

Padded, Zippered Carrying Bag A32ZB

Popper StopperTM PS-6

Popper StopperTM Magnetic Pop Filter

ShureLock®Rubber Suspension Shock Mount

A42PF

A42SM

Certifications

This product meets the Essential Requirements of

all relevant European directives and is eligible for

CE marking.

The CE Declaration of Conformity can be ob-

tained from: www.shure.com/europe/compliance

Authorized European representative:

Shure Europe GmbH

Headquarters Europe, Middle East & Africa

Department: EMEA Approval

Jakob-Dieffenbacher-Str. 12

75031 Eppingen, Germany

Phone: 49-7262-92 49 0

Fax: 49-7262-92 49 11 4

Email: [email protected]

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Omnidirectional

180°

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180°

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250 Hz

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61 cm (2 ft.)

55.9 mm

(2.20 IN.)

187 mm

(7.37 IN.)

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

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

Stopper” 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.

Patent Notice: Pat. D447,131

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