Page 1
Wired Microphones
PG SM Beta KSM
SM WIRED MICROPHONES
INDUSTRY STANDARD. PROFESSIONAL UTILITY.
Shure SM Microphones deliver an unparalleled mix of audio quality and rugged dependability
that has made them the industry standard in professional sound for over 40 years. Built to
withstand the rigors of regular stage and studio use, SM microphones are the cornerstone of a
complete family of Shure wired microphones tailored to meet any audio need.
APPLICATIONS
Touring
Club Performance
Studio Recording
General Sound
Reinforcement
PRODUCT HIGHLIGHTS
Industry standard,
professional utility
Industry-dening sound
Rock-solid construction
Dynamic and condenser
models
Page 2
SM7B Cardioid Dynamic Microphone
SM7B
Overview
The SM7B is a selectable frequency response microphone that delivers warm and smooth audio in close-proximity studio and vocal applications.
Optimized shielding from external electromagnetic hum, along with internal shock mounting, external windscreens and adjustable bass roll-off and midrange emphasis response settings provide clean, consistent reproduction.
Features
• Flat, wide-range frequency response for exceptionally clean and natural reproduction of both music and speech
• Bass rolloff and mid-range emphasis (presence boost) controls with graphic display of response setting
• Improved rejection of electromagnetic hum, optimized for shielding against broadband interference emitted by computer monitors
• Internal “air suspension” shock isolation virtually eliminates mechanical noise transmission
• Highly effective pop filter eliminates need for any add-on protection against explosive breath sounds, even for close-up vocals or narration
• Now shipping with the A7WS detachable windscreen, designed to reduce plosive sounds and gives a warmer tone for close-talk vocals
• Yoke mounting with captive stand nut for easy mounting and dismounting provides precise control of microphone position
• Classic cardioid polar pattern, uniform with frequency and symmetrical about axis, to provide maximum rejection and minimum coloration
of off-axis sound
• Rugged construction and excellent cartridge protection for outstanding reliability
Available Models
Includes foam windscreen, close-talk windscreen, and locking yoke mount.
Specifications
Type Dynamic
Frequency Response 50 to 20,000 Hz
Polar Pattern Cardioid
Electromagnetic Hum Sensitivity
(Typical, Equivalent SPL/milliOersted)
Impedance 150 Ω for connection to microphone inputs rated at 19 to 300 Ω
Output Level (at 1,000 Hz) Open circuit voltage: – 59.0 dB (1.12 mV)
Switches Bass rolloff and mid-range emphasis: Slotted response selector switches
Cartridge Shock Mount Internal air-suspension shock and vibration isolator
Microphone Connector Three-pin professional audio (XLR)
Swivel Assembly Integrated, captive nut for ease of attachment to stand, fits 5/8 in.–27 thread
Polarity Positive pressure on diaphragm produces positive voltage on pin 2 relative to pin 3
Case Dark gray enamel aluminum and steel case with dark gray foam windscreen
Weight 765.4
60 Hz: 11 dB
500 Hz: 24 dB
1 kHz: 33 dB
0 dB = 1 volt per Pascal
Optional Accessories and Replacement Parts
A7WS Large close-talk windscreen RPM106 Replacement cartridge 537A Desk stand
RK345 Microphone windscreen
Polar Pattern
Measured at 1000 Hz
Frequency Response
SM7B
www.shure.eu
250 Hz
500 Hz
1000 Hz
2500 Hz
8300 Hz
+20
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dB
–10
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SM27 Cardioid Condenser Microphone
Overview
The SM27 is a rugged and versatile large-diaphragm, side-address cardioid condenser microphone, with low self-noise and extended frequency response
that picks up vocal and instrument nuances with clarity. Durable Shure construction features three separate mesh layers that reduce wind and breath
noise. Equally comfortable on stage or in the studio.
Features
• Cardioid polar pattern – the most commonly used pattern for both studio and live applications
• 1 inch, externally biased, ultra-thin, 2.5 μm, 24 Karat gold-layered, low mass, Mylar
• Class A, discrete, transformerless preamplifier for transparency, extremely fast transient response and no crossover distortion, while minimizing
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
Available Models
SM27 Includes stand adapter and zippered pouch
Specifications
Type Condenser (externally biased)
Frequency Response 20 to 20,000 Hz
Polar Pattern Cardioid
Impedance 150 Ω (140 Ω actual)
Sensitivity
(at 1 kHz, Open circuit voltage)
Maximum SPL
(1 kHz at 1% THD)
Signal-to-Noise Ratio
(referenced at 94 dB SPL at 1 kHz)
Dynamic Range
(at 1 kHz)
Common Mode Rejection
(20 Hz to 20 kHz)
Clipping Level
(20Hz-20 kHz at 1% THD)
Self Noise
(typical, equivalent SPL, A-weighted)
Polarity Positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3
Weight 642 g
Switch Attenuator: -15 dB
Connector Three-pin professional audio (XLR), male
Power Requirements 48 Vdc phantom, 5.4 mA
−37 dBV/Pa
1 Pascal=94 dB SPL
1000 Ω load: 133 dB (147 dB, Pad on)
2500 Ω load: 138 dB (152 dB, Pad on)
84.5 dB
S/N ratio is difference between 94 dB SPL and equivalent SPL of self noise, A-weighted
1000 Ω load: 123 dB
2500 Ω load: 128 dB
> 50 dB
1000 Ω load: 1 dBV
2500 Ω load: 7 dBV
THD of microphone preamplifier when applied input signal is equivalent to cartridge output at specified SPL
9.5 dB
Low frequency response: flat; -6 dB/octave below 115 Hz; -18 dB/octave below 80 Hz
®
diaphragm provides superior transient response
SM27
Optional Accessories and Replacement Parts
A27SM Shure lock™ rubber isolated shock mount A322B Zippered pouch A32WS Windscreen
RPM642 Replacement rubber rings for shock mount (contains four) PS6 Popper stopper™
60 cm
Frequency Response
2
9876543
Hz
Polar Pattern
Measured at 1000 Hz
180°
–20 dB
–15 dB
–10 dB
–5 dB
+5 dB
150°
120°
90°
60°
30°
150°
120°
90°
60°
30°
250 Hz
500 Hz
1000 Hz 10000 Hz
Wired Microphones | SM
180°
–20 dB
–15 dB
–10 dB
–5 dB
+5 dB
150°
30°
120°
60°
+10
0
90°
dB
–10
20 200001000 1000050 100
150°
120°
90°
60°
30°
2500 Hz
6400 Hz
2
876543
9
www.shure.eu
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SM48 Cardioid Dynamic Microphone
SM48
SM48S
Overview
The SM48 is a rugged cardioid dynamic microphone with great sound and durable construction for reliable use in spoken word and karaoke vocal
performance applications. Available with or without an on/off switch, and comes with a swivel adapter and carrying pouch for many of the benefits of the
®
at an affordable price.
SM58
Features
• Cardioid pickup pattern rejects off-axis sound and provides superior gain before feedback
• Frequency response tailored for vocals, with brightened midrange and bass rolloff to control proximity effect
• Shock-mounted cartridge for exceptional ruggedness and reduced handling noise
• Built-in pop filter that reduces explosive breath sounds and wind noise
• Supplied stand adapter and carrying/storage bag
• Lockable on/off switch (SM48S only)
• Legendary Shure quality and ruggedness
Available Models
Includes stand adapter and zippered pouch
With lockable on/off switch. Includes swivel adapter and a zippered pouch
Specifications
Type Dynamic
Frequency Response 55 to 14,000 Hz
Polar Pattern Cardioid
Impedance Microphone rating impedance is 150 Ω (270 Ω actual) for connection to microphone inputs rated
Output Level (at 1,000 Hz) Open circuit voltage: *–57.5 dBV/Pa (1.3 mV)
Polarity Positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3
Connector Three-pin professional audio (XLR), male
Weight 370 g
Dimensions 166 mm L x 54.2 mm W
at 19 to 300 Ω
*1 Pa = 94 dB SPL
SM48
Optional Accessories and Replacement Parts
A25D Microphone clip A55M, A55HM Isolation mount C25F 7.6 m cable
A58WS Windscreen A26M Dual mount RK81S On/off switch
R136 Cartridge RK248G Screen and grille assembly RK40P Plug assembly
S37A, S39A Desk Stand
Polar Pattern
Measured at 1000 Hz
250 Hz
500 Hz
1000 Hz
2500 Hz
6300 Hz
10000 Hz
+20
+10
0
dB
–10
–20
20 50 100 1000 10000 20000
Frequency Response
9876543298765432
Hz
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Wired Microphones | SM
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SM57 Cardioid Dynamic Microphone
Overview
An industry-standard, highly versatile cardioid dynamic microphone that can be found onstage and in studios around the world. The ideal choice for
sound reinforcement and recording applications, the legendary SM57 is tuned for clean reproduction of amplified and acoustic instruments, targeting the
main sound source while minimizing background noise.
Features
• Frequency response tailored for drums, guitars, and vocals
• Uniform cardioid pickup pattern isolates the main sound source while reducing background noise
• Pneumatic shock-mount system cuts down handling noise
• Extremely durable under the heaviest use
• Supplied break-resistant swivel adapter that rotates 180°
• Legendary Shure quality, ruggedness, and reliability
Available Models
SM57-LC Includes stand adapter and zippered pouch
SM57-LCE Includes 5/8-inch to 3/8-inch thread adapter for mounting on European stands, swivel adapter and a zippered pouch
Specifications
Type Dynamic
Frequency Response 40 to 15,000 Hz
Polar Pattern Cardioid
Sensitivity
(at 1,000 Hz Open circuit voltage)
Impedance Rated impedance is 150 Ω (310 Ω actual) for connection to microphone inputs rated low impedance
Polarity Positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3
Case Dark gray, enamel-painted, die-cast steel with a polycarbonate grille and a stainless steel screen
Connector Three-pin professional audio connector (male XLR type)
Weight 284 g
Dimensions 157 mm L x 32 mm W
Open circuit voltage: -56.0 dBV/Pa* (1.6 mV)
*(1 Pa = 94 dB SPL)
SM57
Optional Accessories and Replacement Parts
A2WS Locking windscreen A55M Isolation mount C25F 7.6 m cable
A25D Microphone clip A26M Dual mount RK244G Screen and grille assembly
R59 Cartridge S37A, S39A Desk stand
Polar Pattern
Measured at 1000 Hz
125 Hz
500 Hz
1000 Hz
2000 Hz
4000 Hz
8000 Hz
Frequency Response
FREQUENCY IN HERTZ
Wired Microphones | SM
www.shure.eu
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SM58® Cardioid Dynamic Microphone
SM58-LC
SM58-CN
SM58S
Overview
The legendary SM58® is an industry-standard, highly versatile cardioid dynamic vocal microphone that is consistently the first choice of vocal performers
around the globe. Even in extreme conditions, the SM58 is tailored to target the main sound source while minimizing background noise, delivering warm
and clear vocal reproduction.
Features
• Frequency response tailored for vocals, with brightened midrange and bass rolloff
• Uniform cardioid pickup pattern isolates the main sound source and minimizes background noise
• Pneumatic shock-mount system cuts down handling noise
• Effective, built-in spherical wind and pop filter
• Supplied with break-resistant stand adapter which rotates 180 degrees
• Legendary Shure quality, ruggedness and reliability
• Cardioid (unidirectional) dynamic
• Frequency response: 50 to 15,000 Hz
Available Models
Includes stand adapter and zippered pouch
Includes 7.6 m XLR-male to XLR-female cable, swivel adapter and a zippered pouch
Includes integrated on/off switch, swivel adapter and a zippered pouch
Specifications
Type Dynamic
Frequency Response 50 to 15,000 Hz
Polar Pattern Cardioid
Sensitivity
(at 1,000 Hz Open circuit voltage)
Impedance Rated impedance is 150 Ω (300 Ω actual) for connection to microphone inputs rated low impedance
Polarity Positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3
Case Dark gray, enamel-painted, die cast metal; matte-finished, silver colored, spherical steel mesh grille
Connector Three-pin professional audio connector (male XLR type)
Weight Net: 298 g
Dimensions 162 mm L x 51 mm W
–54.5 dBV/Pa (1.85 mV)
1 Pa = 94 dB SPL
SM58
Optional Accessories and Replacement Parts
A58WS Windscreen A55M Isolation mount C25F 7.6 m cable
A25D Microphone clip A26M Dual mount RK143G Screen and grille
R59 Cartridge S37A, S39A Desk stand
Polar Pattern
Measured at 1000 Hz
125 Hz
500 Hz
1000 Hz
2000 Hz
4000 Hz
8000 Hz
+20
+10
0
dB
–10
–20
20 50 100 1000 10000 20000
Frequency Response
Hz
9876543298765432
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Wired Microphones | SM
Page 7
SM81 Cardioid Condenser Microphone
Overview
The legendary SM81 is an industry-standard, flat-response cardioid condenser microphone, featuring a wide frequency response and low self-noise.
Highly versatile, the SM81’s renowned sonic accuracy is a constant choice around the world for acoustic stage and studio performance, including guitar,
piano and drum overhead applications.
Features
• 20 Hz to 20 kHz frequency response
• Flat response curve for accurate reproduction of sound sources
• Low noise and high output clipping level
• Low distortion over a wide range of load impedances
• Cardioid polar pattern, uniform with frequency and symmetric about axis, providing maximum rejection
and minimum coloration of off-axis sounds
• Low RF susceptibility
• Selectable low-frequency response: flat, 6 or 18 dB/octave rolloff
• 0 dB/10 dB lockable attenuator switch
• Phantom powering (DIN 45 596 voltages of 12 to 48 Vdc)
• Rugged steel construction for durability
• Field-usable over wide range of temperature and humidity conditions
Available Models
SM81-LC Includes stand adapter and zippered pouch
Specifications
Type Condenser
Frequency Response 20 to 20,000 Hz
Polar Pattern Cardioid
Sensitivity (at 1,000 Hz) Open circuit voltage: -45 dBV/Pascal (5.6 mV) (1 Pa = 94 dB SPL)
Impedance Rated at 150 Ω (85 Ω actual)
Output Clipping Level 800 Ω Load: -4 dBV (0.63 V)
Maximum SPL (at 1,000 Hz) 800 Ω load: 136 dB (attenuator at 0) 146 dB (attenuator at -10)
Self-Noise 16 dB typical, A-weighted
Hum Pickup -3 dB equivalent SPL in a 1 mOe field (60 Hz)
Signal-to-Noise Ratio 78 dB (IEC 651)* at 94 dB SPL
Overvoltage and Reverse Polarity
Protection
Polarity Positive pressure on diaphragm produces positive voltage on pin 2 relative to pin 3
Power 11 to 52 vdc, 1.2 mA
Case Steel construction with vinyl metallic paint finish and stainless steel screens
Connector Three-pin professional audio connector (male XLR type)
Weight 230 g
Dimensions 212 mm L x 23.5 mm W
Recommended minimum load impedance: 800 Ω
150 Ω Load: -15 dBV (0.18 V)
150 Ω load: 128 dB (attenuator at 0) 138 dB (attenuator at -10)
19 dB typical, weighted per DIN 45 405
S/N ratio is difference between 94 dB SPL and equivalent SPL of self– noise A-weighted
Max. external voltage applied to pins 2 and 3 with respect to pin 1: +52 Vdc
Reverse polarity protection: 200 mA max. (diode-clamped)
SM81
Optional Accessories and Replacement Parts
A57F Microphone clip A81G Grille and windscreen A81WS Large foam windscreen
Polar Pattern
Measured at 1000 Hz
Wired Microphones | SM
100 Hz
500 Hz
1000 Hz
2000 Hz
5000 Hz
10000 Hz
+20
+10
0
dB
–10
–20
20 50 100 1000 10000 20000
Frequency Response
1 Meter
98765432 98765432
Hz
www.shure.eu
Page 8
SM86 Cardioid Condenser Microphone
SM86-LC
Overview
The SM86 is an award-winning, rugged cardioid condenser microphone with an extended high frequency response. Constructed with a three-point shock
mount and a two-stage internal pop filter, the tailored frequency response of the SM86 delivers consistently smooth reproduction of lead vocals, even
under the most extreme performance conditions.
Features
• Condenser cartridge for studio quality sound
• Tailored frequency response for a clear reproduction of vocals
• Rugged construction withstands the rigors of touring sound
• Cardioid polar pattern minimizes unwanted background noise
• Excellent choice for stage monitors and personal monitors
• Built-in three-point shock mount minimizes handling noise
• Two-stage pop filter reduces wind and breath noise
Available Models
Includes stand adapter and zippered pouch
Specifications
Type Condenser
Frequency Response 50 to 18,000 Hz
Polar Pattern Cardioid
Sensitivity (at 1,000 Hz) Open circuit voltage: -50 dBV/Pa (3.15 mV)
Impedance 150 Ω at 1 kHz
Output Clipping Level 1000 Ω load at 1,000 Hz: +3 dBV (1.41 V)
Maximum SPL (at 1,000 Hz) 1000 Ω load (1% THD): 147 dB
Self-Noise 23 dB typical, A-weighted
Dynamic Range (1000 Ω) 124 dB (maximum SPL to A-weighted noise level)
Signal-to-Noise Ratio 71 dB at 94 dB SPL (IEC 651)*
Polarity Positive pressure on diaphragm produces positive voltage on pin 2 relative to pin 3 of the output connector
Power Requirements 11 to 52 Vdc, 5.2 mA
Case Dark gray, enamel-painted, die-cast with a stainless steel grille
Connector Three-pin professional audio connector (male XLR type)
Weight 284 g
Dimensions 183 mm L x 49 mm W
(1 Pa = 94 dB SPL)
Recommended minimum load impedance: 600 Ω
*S/N ratio is difference between 94 dB SPL and equivalent SPL of self-noise A-weighted
SM86
Optional Accessories and Replacement Parts
A25D Microphone clip A55M Shock stopper cip A55HM Shock stopper half clip
A85WS Microphone windscreen RPM226 Replacement grille
Polar Pattern
Measured at 1000 Hz
www.shure.eu
250 Hz
500 Hz
1000 Hz
2500 Hz
6400 Hz
10000 Hz
+10
Bd
0
–10
20 200001000 1000050 100
Frequency Response
987654329 8765432
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9
Wired Microphones | SM
Page 9
SM87A Supercardioid Condenser Microphone
Overview
The SM87A is a rugged, lightweight supercardioid condenser microphone with superior rejection for clear reproduction of warm and accurate lead vocals.
Designed with a three-stage shock mount for low self-noise, and a tight polar pattern that excludes unwanted sound sources, the SM87A is an excellent
choice for sound reinforcement in noisy or reverberant environments.
Features
• Highly directional supercardioid pickup pattern
• Controlled low-frequency roll-off
• Very low RF and magnetic hum susceptibility
• Minimally affected by varying load impedance
• Built-in wind and pop filter
• Transducer element shock mounted
• Rugged construction for outstanding reliability
• Field-usable over a wide range of temperature and humidity conditions
• Accepts a wide variety of phantom power sources, including DIN 45 596 voltages of 11 and 52 Vdc
Available Models
SM87A Includes stand adapter and zippered pouch
Specifications
Type Condenser
Frequency Response 50 to 20,000 Hz
Polar Pattern Supercardioid
Sensitivity (at 1,000 Hz) Open circuit voltage: –52.5 dBV/Pa (2.4 mV) (1 Pa = 94 dB SPL)
Impedance Rated at 150 Ω (100 Ω actual ±20%)
Output Clipping Level 1000 Ω Load at 1,000 Hz: –6 dBV (0.5 V)
Maximum SPL (at 1,000 Hz) 140.5 dB (0.25% THD, 1000 Ω load)
Self-Noise 24 dB typical, A-weighted
Dynamic Range (1000 Ω) 116.5 dB (maximum SPL to A-weighted noise level)
Signal-to-Noise Ratio 70 dB at 94 dB SPL (IEC 651)
Polarity Positive pressure on diaphragm produces positive voltage on pin 2 relative to pin 3
Power Requirements 11 to 52 vdc, 1.2 mA
Case Aluminum construction with steel grille and satin black finish
Connector Three-pin professional audio connector (male XLR type)
Weight 200 g
Dimensions 192 mm L x 50 mm W
Recommended minimum load impedance: 800 Ω
26 dB typical, weighted per DIN 45 405
S/N ratio is difference between 94 dB SPL and equivalent SPL of self– noise A-weighted
SM87A
Optional Accessories and Replacement Parts
A25D Microphone clip RK128 Replacement cartridge and shock mount A55M, A55HM Isolation mount
A85WS Microphone windscreen RK214G Replacement screen and grille
Polar Pattern
Measured at 1000 Hz
Wired Microphones | SM
100 Hz
500 Hz, 1000 Hz
3150 Hz
610000 Hz
+20
+10
0
dB
–10
–20
20 50 100 1000 10000 20000
Frequency Response
9876543298765432
Hz
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Page 10
SM94 Cardioid Condenser Microphone
SM94
Overview
The SM94 is a rugged, versatile flat-response cardioid condenser microphone, designed with a frequency response free of either presence peaks or
low-end rolloffs, for use with live amplified and acoustic instruments. Additionally, the SM94 can be powered from one AA battery or phantom power, for
remote recording applications and environmental conditions.
Features
• A sensitive mic with a wide, flat response ideal for live amplified and acoustic instruments.
• Extremely well-suited for reproduction of stringed instruments, woodwinds and cymbals
• AA battery or phantom power
• Internal shock mount
• Wide dynamic range
• Smooth, flat frequency response
• Uniform Cardioid condenser
• Frequency response: 40 to 16,000 Hz
Available Models
Includes stand adapter and zippered pouch
Specifications
Type Condenser
Frequency Response 40 to 16,000 Hz
Polar Pattern Cardioid
Sensitivity (at 1,000 Hz) Open circuit voltage: –49 dBV/Pa (3.5 mV) (phantom)
Impedance Rated at 150 Ω; 200 Ω actual
Output Clipping Level (1 kHz, 3% THD) 800 Ω Load – 14 dBV (0.63 V) (phantom), 1% THD;
Total Harmonic Distortion < 0.25% (130 dB SPL at 250 Hz into 800 Ω load)
Maximum SPL 800 Ω Load: 141 dB (phantom), 123 dB (battery)
Hum Pickup –3 dB equivalent SPL in a 1 millioersted field (60 Hz)
Output Noise (equivalent sound pressure
levels; measured with true rms voltmeter)
Dynamic Range 119 dB (phantom); 101 dB (battery) (maximum SPL, 2000 Ω load, to A–weighted noise level)
Signal-to-Noise Ratio 72 dB (IEC 651)* at 94 dB SPL
Overvoltage Protection Maximum external voltage applied to pins 2 and 3 with respect to pin 1: +52 Vdc
Polarity Positive pressure on diaphragm produces positive voltage on pin 2 relative to pin 3
Power Supply Voltage: 11 to 52 Vdc, (+) pins 2 and 3
Battery Operation Type: 1.5 V alkaline, AA size (NEDA 15A)
Connector XLR professional audio 3-Pin
Case Steel and brass construction with gray finish and stainless steel mesh grille
Weight 250 g less battery
–50 dBV/Pa (3.2 mV) (battery) (1 Pa = 94dB SPL)
–23 dBV (0.71 V) (battery), 3% THD
22 dB typical, A-weighted
25 dB typical, weighted per DIN 45 505
Reverse polarity protected to 75 Vdc
Current Drain: 1.0 to 1.2 mA max. at 52 Vdc
Life: Up to 5,000 hours with fresh battery
SM94
Optional Accessories and Replacement Parts
A25D Microphone clip A15AS Switch-selectable attenuator A53M Isolation mount
A3WS Microphone windscreen
Polar Pattern
Measured at 1000 Hz
www.shure.eu
250 Hz
500 Hz
1000 Hz
2500 Hz
6300 Hz
10000 Hz
+20
+10
0
dB
–10
–20
20 50 100 1000 10000 20000
Frequency Response
98765432 98765432
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Wired Microphones | SM
Page 11
SM137 Cardioid Condenser Microphone
Overview
The SM137 is a versatile, flat-response cardioid condenser probe microphone with an ultra-thin diaphragm for a frequency response that combines
a smooth high-end with a tight, controlled low-end and a -15 dB pad for natural sound reproduction in both acoustic and high volume performance
applications
Features
• Cardioid polar pattern to reduce the pickup of unwanted sounds
• Ultra-thin, 2.5 μm 24 karat gold-layered, low mass Mylar® diaphragm for superior transient response
• Class A, discrete, transformerless preamplifier for transparency, extremely fast transient response, no crossover distortion,
and minimal harmonic and intermodulation distortion
• Premium electronic components, including gold-plated internal and external connectors
• Two-position switchable pad (0 dB and 15 dB) for handling extremely high sound pressure levels (SPLs)
Available Models
SM137 Includes a swivel adapter and a zippered pouch
Specifications
Type Electret condenser
Frequency Response 20 to 20,000 Hz
Polar Pattern Cardioid
Impedance 150 Ω (actual)
Sensitivity
(at 1 kHz, Open circuit voltage)
Maximum SPL
(1 kHz, < 1% THD)
Signal-to-Noise Ratio
(referenced at 94 dB SPL at 1 kHz)
Dynamic Range
(at 1 kHz)
Common Mode Rejection
(20 Hz to 20 kHz)
Clipping Level
(20Hz-20 kHz at 1% THD)
Self Noise
(typical, equivalent SPL, A-weighted)
Polarity Positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3
Weight 195 g
Switch Attenuator: −15 dB
Dimensions 162 mm L x 24 mm
Connector Three-pin professional audio (XLR), male
Power Requirements 48 Vdc phantom, 5.2 mA
−41 dBV/Pa
1 Pascal=94 dB SPL
1000 Ω load: 139 dB (154 dB, Pad on)
2500 Ω load: 144 dB (159 dB, Pad on)
75 dB
S/N ratio is difference between 94 dB SPL and equivalent SPL of self noise, A-weighted
1000 Ω load: 122 dB
2500 Ω load: 128 dB
> 50 dB
1000 Ω load: 3 dBV
2500 Ω load: 9 dBV
THD of microphone preamplifier when applied input signal is equivalent to cartridge output at specified SPL
19 dB
SM137
Optional Accessories and Replacement Parts
A55M, A55HM Shock stopper™ isolation mount A53M Isolation mount A25D Microphone clip
Polar Pattern
Measured at 1000 Hz
Wired Microphones | SM
Frequency Response
www.shure.eu
Page 12
Europe, Middle East, Africa:
Shure Europe GmbH
Jakob-Dieffenbacher-Str. 12,
75031 Eppingen, Germany
Phone: +49-7262-92490
Fax: +49-7262-9249114
Email: info@shure.de
www.shure.eu
www.shure.eu
© 2014 Shure Incorporated
08/14
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