Shure KSM141 Bedienungsanleitung

User Guide

27B3156 (CE)

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

SHURE INCORPORATED

KSM141 DUAL 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 KSM141

Over 75 years of audio experience has contributed to making the KSM141

one of the finest microphones available.

English

Low Frequency

Response Switch

0/15/25 dB

Attenuation Switch

FIGURE 1. KSM141

Rotating

Polar Pattern Switch

GENERAL DESCRIPTION

The ShureR

KSM141 is an end-addressed condenser microphone with

mechanically switching dual polar patterns (cardioid and omnidirectional).

Designed for studio use, yet rugged enough for live applications, the KSM141 can

withstand extremely high sound pressure levels (SPL). Its low self-noise and

extended frequency response make it ideal for recording musical instruments.

FEATURES

SA mechanical polar pattern switch for highly consistent cardioid and true

omnidirectional polar patterns. Provides flexibility in a wide variety of recording

applications.

SUltra-thin, 2.5 µm, 24 karat gold-layered, low mass MylarR

diaphragm for

superior transient response

SClass A, discrete, transformerless preamplifier for transparency, extremely

fast transient response, no crossover distortion, and minimal harmonic and

intermodulation distortion

SPremium electronic components, including gold-plated internal and external

connectors

SSubsonic filter eliminates low frequency rumble (less than 17 Hz) caused by

mechanical vibration

SThree-position switchable pad (0 dB, 15 dB, and 25 dB) for handling

extremely high sound pressure levels (SPLs)

SThree-position switchable low-frequency filter to reduce background noise

and counteract proximity effect

English

PERFORMANCE CHARACTERISTICS

SExtended frequency response

SLow self-noise

SExceptional reproduction of low-frequency sounds

SCan withstand high sound pressure levels (SPL)

SHigh output level

SNo crossover distortion

SUniform polar response

SSuperior common mode rejection and suppression of RFI (radio frequency

interference)

MODEL VARIATIONS

KSM141/SL KSM141/SL ST PAIR

One KSM141 Condenser Microphone Two KSM141 Condenser Microphones

One A141C Carrying Case One A141SPC Carrying Case

One A100WS Windscreen Two A100WS Windscreens

One A57F Stand Mount Two A57F Stand Mounts

One European-threaded adapter that

mates the A57F to European-threaded

microphone stands

Two European-threaded adapters that

mate the A57F to European-threaded

microphone stands

APPLICATIONS

The KSM141 produces superior results in any application requiring a high quality

microphone. Typical applications include:

SClose miking of acoustic instruments such as piano, guitar, violins, drums,

and percussion

SOverhead miking of drums and percussion instruments

SElectric guitar amplifiers

SBrass and woodwind instruments

SRoom ambience pick-up (guitar amplifier or drums)

SOrchestras, choirs, wind ensembles

SLow-frequency instruments such as double bass and kick drum

NOTE: Sound quality is strongly affected by microphone location and room

acoustics. To achieve the best overall sound for a particular application, it may be

necessary to experiment with microphone placement and various room treatments.

English

USING THE KSM141

Mounting the Microphone

To secure the KSM141 to a floor stand or boom, thread the mount onto the

microphone stand and insert the microphone into the microphone clip.

Power Requirements

This microphone requires phantom power and performs best with a 48 Vdc supply

(IEC-268-15/DIN 45 596). It can operate on voltages as low as 11 Vdc, but headroom

and sensitivity will be decreased slightly.

NOTE: Most modern mixers provide phantom power.

Cable Connections

Use a cable with XLR connectors at each end.

Load Impedance

Shure recommends a load impedance of at least 1000 Ω. When used with modern

microphone preamplifiers rated at about 2500 Ω, the KSM141 provides higher

maximum SPL capability and output clipping level. When the attenuation switch is

set to the –25 dB position, it can handle up to 164 dB SPL, and can output +15 dBV

into a load of 5000 Ωor greater.

Selecting a Polar Pattern

To select either the cardioid or omnidirectional polar pattern, rotate the knurled ring

on the microphone in either direction until you feel a detent. The image of the

desired polar pattern should be directly above the notch at the base of the ring.

NOTE: Operating the KSM141 in a non-detent position (no polar pattern selected)

will produce an unpredictable polar pattern and may adversely affect frequency

response.

Cardioid. When this pattern is selected, the microphone picks up sounds

directly in front of the microphone and is least sensitive to those in back. This is the

most commonly used pattern in studio recording and live-sound applications. See

Figure 4.

Omnidirectional. Picks up sounds from all directions. This pattern is best for

picking up room ambience and for miking several sources, such as an ensemble

or multiple singers, simultaneously. The omnidirectional polar pattern exhibits no

proximity effect. See Figure 4.

WARNING: Rotating the polar pattern switch produces mechanical noise which,

when amplified, may damage the loudspeakers. Turn down any loudspeakers or

mute the microphone at the mixing console before changing the polar pattern.

English

Setting Low-Frequency Response

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

The low frequency filters can be used to reduce wind noise, room noise, and

proximity effect. Refer to Figure 2.

ÑÑÑÑÑÑÑÑ

20 100050 100 98765432

–10

Low-Frequency Cutoff

Low-Frequency Rolloff

Flat Response

Figure 2. Low Frequency Response

Flat response. This setting provides

the most natural sound reproduction

in most applicatons.

Low-frequency cutoff. This setting

provides an 18 dB-per-octave cutoff

at 80 Hz. It helps eliminate floor

rumble and low-frequency noise

produced by heating and air

conditioning systems. 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. This setting provides a 6 dB-per-octave rolloff at 115 Hz.

Use this setting to compensate for proximity effect or to reduce low frequencies

that could make an instrument sound dull or muddy.

Setting Attenuation

The attenuation switch lets you reduce the signal level by up to 25 dB without

altering frequency response. This can prevent extremely loud sounds from

overloading the microphone. Set the switch to the desired attenuation levels as

follows:

0 dB – Move the switch to this position for “quiet” to “normal” sound levels.

-15 dB – Move the switch to this position when the microphone is approxi-

mately 0.75 meters (2 feet) from sound sources such as a kick drum, snare

drum, or electric guitar cabinet.

-25 dB – Move the switch to this position when the microphone is 4 inches

(10 cm) or less from extremely loud sound sources such as kick drum, snare

drum, or guitar cabinets.

English

SPECIFICATIONS

Cartridge Type Permanently Biased Condenser

Frequency Response 20–20,000 Hz (see Figures 3 and 5)

Directional Polar Pattern Cardioid/Omnidirectional (see Figures 4 and 6)

Output Impedance 150 Ω(actual)

Attenuation Switch 0 dB,15 dB, or 25 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 4.65 mA 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 20 mm (0.8 in.) diameter, 146 mm (5.75 in.) long;

156 grams (5.5 oz.) (see Figure 7)

Sensitivity (typical, at 1000 Hz;

1 Pa = 94 dB SPL) –37 dBV/Pa

Self–noise (typical, equivalent SPL;

A-weighted, IEC 651) 14 dB

Maximum SPL

5000 load (Attenuator on)

2500 load (Attenuator on)

1000 load (Attenuator on)

145 (160, 170) dB

139 (154, 164) dB

134 (149, 159) dB

Output Clipping Level*

5000 load

2500 load

1000 load

15 dBV

9 dBV

3 dBV

Dynamic Range

5000 load

2500 load

1000 load

131 dB

125 dB

120 dB

Signal to Noise Ratio** 80 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.

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

English

CARDIOID RESPONSE GRAPHS

60 cm

FIGURE 3. TYPICAL CARDIOID FREQUENCY RESPONSE

FIGURE 4. TYPICAL CARDIOID POLAR PATTERNS

250 Hz

1000 Hz

2500 Hz

10000 Hz

500 Hz 6400 Hz

English

OMNIDIRECTIONAL RESPONSE GRAPHS

60 cm

FIGURE 5. TYPICAL OMNIDIRECTIONAL FREQUENCY RESPONSE

250

500 2500

10K

6400

FIGURE 6. TYPICAL OMNIDIRECTIONAL POLAR PATTERNS

(0.8 IN)

FIGURE 7. DIMENSIONS

146 mm

(5.75 IN)

20 mm

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 KSM141 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.

FURNISHED ACCESSORIES

Case A141C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Case (Stereo Pair) A141SPC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Windscreen A100WS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Microphone Clip A57F. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

OPTIONAL ACCESSORIES

SHOCKSTOPPERtShock Mount A53M. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SERVICE

For additional microphone service or parts information, please contact the Shure

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

your Authorized Shure Service Center.

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