Shure SM137 Handleiding

Shure Microfoon SM137

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SM137 -- Instrument Microphone

General Description

The Shure SM137 is a versatile, flat-response cardioid probe microphone with an ultra-thin diaphragm. Its fre-

quency response combines smooth high-end and tight, controlled low-end. A 15 dB pad provides natural, consis-

tent sound reproduction in both acoustic and high-volume performance applications.

Features

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)

Applications

•Brass and woodwind instruments

•Orchestras, choirs, and wind ensembles

•Overhead miking of drums and percussion instruments

•Close-miking of acoustic instruments such as piano, guitar, violins, drums, and percussion

•Low-frequency instruments such as double bass and kick drum

•Electric guitar and bass amplifiers

•Vocals and speech

•Room ambience

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 room

treatments.

Shure Incorporated

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Mounting the Microphone

Use the supplied microphone mount with floor or boom stands. Visit www.shure.com for more mounting options:

•To reduce the pickup of unwanted low-frequency mechanical vibrations, use an isolating shock mount.

•For stereo applications, use the optional Shure A27M Stereo Microphone Adapter.

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.

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.

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 neces-

sary when close-miking vocalists.

Load Impedance

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

amplifier 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.

Power Requirements

This microphone requires phantom power and performs best with a 48 Vdc 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 microphone cable: XLR-to-XLR or XLR-balanced

to-TRS.

Specifications

Type

Electret Condenser

Frequency Response

20 to 20,000 Hz

Shure Incorporated

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Polar Pattern

Cardioid

Output Impedance

150 (actual) Ω

Sensitivity

(at 1 kHz, open circuit voltage)

-41 dBV/Pa

Maximum SPL

(1 kHz at 1% THD)

1000 Ω load dB dB139 (154 , PAD ON)

2500 Ω load dB dB144 (159 , PAD ON)

Signal-To-Noise Ratio

(Ref. 94 dB SPL at 1 kHz)

75 dB

Dynamic Range

(at 1 kHz)

1000 Ω load dB120

2500 Ω load dB125

Common Mode Rejection

(10 Hz to 100 kHz)

>50 dB

Clipping Level

(20 Hz to 20 kHz, at 1% THD )

1000 Ω load dBV3

2500 Ω load dBV9

Self Noise

(typical, equivalent SPL, A-weighted)

19 dB

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Product specificaties

Merk:	Shure
Categorie:	Microfoon
Model:	SM137
Kleur van het product:	Zwart
Soort:	Microfoon voor studio's
Connectiviteitstechnologie:	Bedraad
Aansluiting:	XLR-3
Stroomverbruik:	5.2 mA
Signaal/ruis-verhouding:	75 dB
Microphone direction type:	Cardioïde
Gevoeligheid microfoon:	-41 dB
Operating voltage:	48 V
Frequentie microfoon:	20 - 20000 Hz
Microphone input impedance:	150 Ohm
Aantal producten inbegrepen:	1 stuk(s)
Gewicht microfoon:	195 g
Afmetingen microfoon (DxH):	24 x 162 mm