The SM27 is a rugged and versatile large-diaphragm, side-address cardioid 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.
- Uniform cardioid pattern for superior off axis rejection
- Superior transient response from a low-mass large Mylar® diaphragm
- Flat, neutral frequency response for natural reproduction on stage or in the studio
- 3-position switchable low-frequency filter helps reduce unwanted background noise or counteract proximity effect for consistent, extended low-end
- Durable metal construction.
- Three separate mesh layers reduces wind and breath noise.
- 15dB pad for performance consistency across a wider range of high SPL sources
Externally Biased Condenser
20 to 20,000 Hz
Directional Polar Pattern
EIA Rated at 150 ohms (140 ohms actual)
0 or 15 dB attenuation
Low Frequency response switch
-6 db/octave below 115 Hz
-18 dB/octave below 80 Hz
48 Vdc +/- 4 Vdc (IEC26815/DIN 45 596), positive pins 2 and 3
5.4 mA typical at 48 Vdc
Common Mode Rejection
>50 dB, 20 Hz to 20 kHz
Positive pressure on diaphragm produces positive voltage on output pin 2 relative to pin 3
Dimensions and Weight
53.0 mm (2.08 in.) maximum body diameter
156.2 mm (6.15 in.) long;
642 grams (22.6 oz.)
Sensitivity (typical, at 1000 Hz; 1Pa = 94 dB SPL)
Selfnoise (typical, equivalent SPL; Aweighted, IEC 651)
Maximum SPL (1000 Hz at 1% THD)
2500 ohm load (Attenuator on): 138 (153) dB
1000 ohm load (Attenuator off): 133 (148) dB
Output Clipping Level*
2500 ohm load: 7 dBV
1000 ohm load: 1 dBV
2500 ohm load: 128 dB
1000 ohm load: 123 dB
Signal to Noise ratio**
*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.
AVShop.ca is a Canadian authorized Shure