Shure KSM44 Bedienungsanleitung

User Guide

27B3122 (CE)

E2003, Shure Incorporated Printed in U.S.A.

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

FIGURE 1. KSM44 FRONT AND BACK

GENERAL DESCRIPTION

The ShureR

KSM44 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, MylarR

diaphragms provide superior frequency 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.

English

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

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.

English

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.

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 5.

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 a

choir or ensemble. Omnidirectional patterns do not exhibit proximity effect. See

Figure 7.

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

rejecting sounds from the sides. Bidirectional is often for stereo recording (such as

mid-side and Blumlein techniques). See Figure 9.

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.

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.

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 systems. May also be used to

compensate for proximity effect or to

reduce low frequencies that make an

instrument sound dull or muddy.

ÑÑÑÑÑÑÑÑÑ

20 100050 100 98765432

–10

Low-Frequency Cutoff

Low-Frequency Rolloff

Flat Response

FIGURE 2. LOW FREQUENCY FILTERS

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 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.

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

ohm or greater load.

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. See

Figure 3.

FIGURE 3. PS-6 POPPER STOPPERT

POP FILTER

English

SPECIFICATIONS

Cartridge Type Externally biased condenser

Frequency Response 20 to 20,000 Hz

(See Figures 4, 6, 8)

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

Directional Polar Patterns Cardioid

(See Figure 5) Omnidirectional

(See Figure 7) Bidirectional

(See Figure 9)

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 @ 1000 Hz

2500 load (Attenuator on)

1000 load (Attenuator on)

132 (149) dB

127 (144) dB

138 (151) dB

132 (145) dB

137 (150) dB

131 (144) dB

Output Clipping Level*

2500 load

1000 load

7 dBV

1 dBV

7 dBV

1 dBV

7 dBV

1 dBV

Dynamic Range

2500 load

1000 load

125 dB

120 dB

128 dB

122 dB

127 dB

121 dB

Signal to Noise ratio** 87 dB 84 dB 84 dB

Dimensions and Weight 55.9 mm (2.20 in.) maximum body diameter, 187 mm

(7.37 in.) long; 490.5 grams (17.30 oz). See Figure 10.

*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.

**S/N ratio is difference between 94 dB SPL and equivalent SPL of self-noise A-weighted.

English

CARDIOID RESPONSE GRAPHS

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FIGURE 4. TYPICAL CARDIOID FREQUENCY RESPONSE

FIGURE 5. TYPICAL CARDIOID POLAR PATTERN

OMNIDIRECTIONAL RESPONSE GRAPHS

ÑÑÑÑÑÑÑÑÑÑÑ

15 cm.

60 cm.

FIGURE 6. TYPICAL OMNIDIRECTIONAL FREQUENCY RESPONSE

FIGURE 7. TYPICAL OMNIDIRECTIONAL POLAR PATTERN

English

BIDIRECTIONAL RESPONSE GRAPHS

ÑÑÑÑÑÑÑÑÑÑÑ

FIGURE 8. TYPICAL BIDIRECTIONAL FREQUENCY RESPONSE

FIGURE 9. TYPICAL BIDRECTIONAL POLAR PATTERNS

55.9 mm

(2.20 IN.)

187 mm

(7.37 IN.)

FIGURE 10. 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 KSM44 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

ShureLocktChampagne Elastic Shock Mount A44SM. . . . . . . . . . . . . . . . . .

ShureLocktChampagne Swivel Adapter A44M. . . . . . . . . . . . . . . . . . . . . . . .

Aluminum Carrying Case A44SC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Protective Velveteen Pouch A44VB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

OPTIONAL ACCESSORIES

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

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

REPLACEMENT PARTS

Suspension Shock Mount Elastic Cord,

Champagne (contains one) 95B2125. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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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