Shure KSM44 Bedienungsanleitung

27B3122 (BD)

E2002, Shure Incorporated Printed in U.S.A.

User Guide

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.

Patent Notice: Patent Des. 447,131

Declaration of Conformity

We of

Shure Incorporated

222 Hartrey Ave.

Evanston IL 60202–3696 U.S.A.

847–866–2200

declare under our sole responsibility that the following product,

KSM44 Multiple Polar Pattern Condenser Microphone

was tested and found to comply with Part 15 of the FCC rules.

Operation is subject to the following two conditions: (1) this device may not

cause harmful interference, and (2) this device must accept any interference

received, including interference that may cause undesired operation.

Testing was completed by the following NVLAP or A2LA accredited

laboratory: D.L.S. Electronic Systems, Inc.

1250 Peterson Drive

Wheeling, Illinois 60090, U.S.A.

at the test sites 1 and 2 of

D.L.S. Electronic Systems, Inc.

166 South Center

Genoa City, Wisconsin 53128, U.S.A.

Shure Inc., Manufacturer.

Signed: Date: June 16, 2000

Name, Title: Craig Kozokar, Senior Quality Engineer

English

SHURE INCORPORATED

KSM44 MULTIPLE POLAR PATTERN 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 KSM44

Over 75 years of audio experience has contributed to making the KSM44

one of the finest microphones available.

English

GENERAL DESCRIPTION

The ShureRKSM44 is a side-address condenser microphone with multiple polar

patterns (cardioid, omnidirectional, bidirectional). Designed for studio use, the

KSM44 has externally biased, dual 1-inch diaphragms, extremely low self-noise

and an extended frequency response specially tailored for vocal tracking and

instrument recording.

FEATURES

SMultiple polar patterns–cardioid, omnidirectional and bidirectional–for maxi-

mum flexibility in a wide variety of recording applications.

SDual 1 inch, externally biased, ultra-thin, 2.5 µm, 24 Karat gold-layered, low

mass, MylarRdiaphragms provide superior transient response

SClass A, discrete, transformerless preamplifier for transparency, extremely

fast transient response and no crossover distortion. Minimizes harmonic

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

SUltra-low 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 KSM44 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

SWind instruments—brass and woodwind

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

SOverhead miking—drums or percussion

SEnsembles—choral or orchestral

SRoom ambience pick-up—guitar amplifier or drums

Both the acoustic environment and microphone placement strongly affect the

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

like the KSM44. You may need to experiment with microphone placement, room

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

OPERATION

Mounting

Use either the ShureLocktswivel mount or the elastic shock mount to secure

the KSM44 to a floor or boom stand. When using the swivel mount, the internal

shock mount provides good isolation from vibration. For even greater reduction of

noise from external vibrations, use the elastic shock mount.

Important: When using the swivel mount or elastic shock mount, be sure that

the threaded, knurled locking grip is screwed securely onto the threads at the base

of the microphone. Do not overtighten.

Power

The KSM44 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.

Positioning the Microphone

The front of the KSM44 is marked by the logo and the polar-pattern

selection switch. 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.

Selecting a Polar Pattern

The three position switch on the front of the KSM44 sets the polar response

pattern of the microphone. The sensitivity of the microphone to sounds coming

from different angles varies according to this switch’s setting.

English

Polar pattern

switch

Low-frequency

response

switch

15 dB

attenuator

KSM44 FRONT KSM44 BACK

FIGURE 1. KSM44 Front and Back

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

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

recording and live-sound applications. See Figure 4.

Omnidirectional. Picks up sound equally from all directions. This pattern

is best for picking up room ambience and miking several sources at once, such as

singers or an ensemble. Omnidirectional patterns do not exhibit proximity effect.

See Figure 6.

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

while rejecting sounds from the sides. Bidirectional is often used in microphone

configurations for stereo recording (such as mid-side and Blumlein techniques).

See Figure 8. Note: As with all bidirectional microphones, sounds picked up from

the front will be in polarity with the source and those picked up from the back will

be out of polarity with the source.

English

Selecting Low-Frequency Response

A three-position switch on the back of the KSM44 allows you to adjust the

low-frequency response of the microphone, as shown in Figure 2. 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 ShureLocktelastic-suspension shock mount may be required 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 stage rumble or

low-frequency room noise from

heating, ventilation, or cooling (HVAC)

systems. It 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 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 KSM44 reduces the signal level from

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

extremely high SPLs from overloading the microphone. To activate attenuation,

move the switch to the “–15 dB”position. Note: In situations where the high output

of the KSM44 might overload the microphone preamplifier of a console or mixer,

use an attenuation pad in the mixer.

Integral Pop Filter

The KSM44 has an integral pop filter which helps reduce wind and breath noise.

An external pop-protection screen or windscreen may be necessary when

close-miking vocalists. The low-frequency cutoff filter may also be effective.

Load Impedance

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

modern microphone preamplifiers (rated at about 2500 Ω), the KSM44 provides

higher maximum SPL capability and output clipping level. With the -15 dB pad

engaged, the KSM44 can handle up to 156 dB SPL and output +15 dBV into a 5500

Ωor greater load.

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20 100050 100 98765432

–10

Low-Frequency Cutoff

Low-Frequency Rolloff

Flat Response

Figure 2. Low Frequency Responses

English

SPECIFICATIONS

Cartridge Type Externally biased condenser

Frequency Response 20 to 20,000 Hz

(See Figures 3, 5, 7)

Output Impedance 150 Ω(actual)

Attenuation Switch 0 or 15 dB 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 5.4 mA typical at 48 Vdc

Common Mode

Rejection 50 dB, 20 Hz to 20 kHz

Polarity Positive pressure on front diaphragm produces positive voltage on

output pin 2 relative to pin 3

Dimensions and

Weight 55.9 mm (2.20 in.) maximum body diameter, 187 mm (7.37 in.) long;

490.5 grams (17.30 oz)

Directional polar

Patterns Cardioid

(See Figure 4) Omnidirectional

(See Figure 6) Bidirectional

(See Figure 8)

Sensitivity

(typical; at 1000 Hz;

1 Pa = 94 dB SPL) –31 dBV/Pa –37 dBV/Pa –36 dBV/Pa

Self-noise

(typical, equivalent SPL;

A-weighted (IEC 651)) 7 dB 10 dB 10 dB

Maximum SPL* 2500

Ωload

(Attenuator on) 132 (149) dB 138 (151) dB 137 (150) dB

1000 Ωload 127 (144) dB 132 (145) dB 131 (144) dB

Output Clipping

Level*

2500 Ωload 7 dBV 7 dBV 7 dBV

1000 Ωload 1 dBV 1 dBV 1 dBV

Dynamic Range

2500 Ωload 125 dB 128 dB 127 dB

1000 Ωload 120 dB 122 dB 121 dB

Signal to Noise ratio 87 dB 84 dB 84 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

CARDIOID RESPONSE GRAPHS

FIGURE 3. TYPICAL FREQUENCY RESPONSE

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20 200001000 1000050 100 98765432 98765432

+10

–10

15 cm.

60 cm.

FIGURE 4. TYPICAL POLAR PATTERNS

125

250 1000

500 2500

5000 10000

15000

150o

120o

150o

120o

180o

30o

60o

90o

30o

60o

90o

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

OMNIDIRECTIONAL RESPONSE GRAPHS

FIGURE 5. TYPICAL FREQUENCY RESPONSE

ÑÑÑÑÑÑÑÑÑÑÑ

20 200001000 1000050 100 98765432 98765432

+10

–10

15 cm.

60 cm.

English

FIGURE 6. TYPICAL POLAR PATTERNS

125

250 1000

500 2500

5000 10000

15000

30o

60o

90o

150o

120o

150o

120o

180o

30o

60o

90o

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

BIDIRECTIONAL RESPONSE GRAPHS

ÑÑÑÑÑÑÑÑÑÑÑ

20 200001000 1000050 100 98765432 98765432

+10

–10

15 cm.

60 cm.

FIGURE 8. TYPICAL POLAR PATTERNS

125

250 1000

500 2500

5000 10000

15000

150o

120o

150o

120o

180o

30o

60o

90o

30o

60o

90o

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

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