The Shure® SM27 is a rugged and versatile large-diaphragm, side-address cardioid microphone. Low self-noise and extended frequency response 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 the stage or in the studio.
SM27-LC: Includes a padded carrying bag and low-profile stand mount.
SM27-SC: Includes a rubber-suspension shock mount and velveteen pouch.
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.
Use the supplied microphone mount with floor or boom stands. Visit www.shure.com for more mounting options:
The front of the microphone is marked by the Shure logo. Position this side toward the sound source.
A three-position switch on the back of the microphone lets you adjust the low-frequency response. Use the low-frequency filter to reduce wind noise, room noise, or proximity effect.
Flat response. Provides the most natural sound in most applications.
Low frequency cutoff. Provides an 18 dB-per-octave cutoff at 80 Hz. Helps eliminate floor rumble and low-frequency room noise from 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. Provides a 6 dB-per-octave rolloff filter at 115 Hz. Use this to compensate for proximity effect or to reduce low frequencies that could make an instrument sound dull or muddy.
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. |
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 necessary when close-miking vocalists.
Maximum SPL capability, output clipping level, and dynamic range vary with the input load impedance of the preamplifier 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.
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 balanced microphone cable: XLR-to-XLR or XLR-to-TRS.
Condenser (externally biased)
20 to 20,000 Hz
Cardioid
140 Ω
at 1kHz,open circuit voltage
-37 dBV/Pa[1]
1 kHz at 1% THD[2]
| 2500 Ω load | 138 dB (152 dB, PAD ON) |
| 1000 Ω load | 133 dB (147 dB, PAD ON) |
84.5 dB
at 1kHz
| 2500 Ω load | 128 dB |
| 1000 Ω load | 123 dB |
20 Hz to 20 kHz
>50 dB
20 Hz to 20 kHz, at 1% THD
| 2500 Ω load | 7 dB |
| 1000 Ω load | 1 dB |
equivalent SPL, A-weighted, typical
9.5 dB
Positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3
642 g(22.6 oz.)
| Attenuator Switch | -15 dB |
| LOWFrequency Response | Flat, –6 dB/octave below 115 Hz, or –18 dB/octave below 80 Hz |
Three-pin professional audio (XLR), male, balanced
48 V DCphantom power, 5.4 mA
[1] 1 Pa=94 dB SPL
[2] THD of microphone preamplifier when applied input signal level is equivalent to cartridge output at specified SPL
[3] S/N ratio is the difference between 94 dB SPL and equivalent SPL of self-noise, A-weighted
Typical Frequency Response
Typical Polar Patterns
Overall Dimensions
|
Black Mount/Swivel Adapter for Beta 27, KSM27, KSM32 and KSM44 |
A32M |
|
Padded, Zippered Carrying Bag for Beta 27, SM27 |
A27ZB |
|
Protective Velveteen Pouch |
95A14078 |
| ShureLock® Rubber Isolated Shock Mount |
A27SM |
|
Black Foam Windscreen for BETA 27, KSM27, KSM32, KSM42, KSM44, KSM44A, PG27, PG42 and SM27 |
A32WS |
| Popper Stopper® Pop Filter with Metal Gooseneck and Microphone Stand Clamp |
PS-6 |
| ShureLock Shock Mount Rubber Rings (4) for KSM27 and SM27 |
RPM642 |
This product meets the Essential Requirements of all relevant European directives and is eligible for CE marking.
The CE Declaration of Conformity can be obtained from: www.shure.com/europe/compliance
Authorized European representative:
Shure Europe GmbH
Headquarters Europe, Middle East & Africa
Department: EMEA Approval
Jakob-Dieffenbacher-Str. 12
75031 Eppingen, Germany
Phone: 49-7262-92 49 0
Fax: 49-7262-92 49 11 4
Email: info@shure.de
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