| Transducer Type |
Condenser (externally biased) |
|
Perfect for either the stage OR the studio, 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.
|
| Polar pattern |
Cardioid |
| Frequency response |
20 Hz - 20 kHz |
| Impedance |
150 Ω (140 Ω actual) |
| Sensitivity |
−37 dBV/Pa
1 Pascal=94 dB SPL |
Maximum SPL
(1 kHz at 1% THD) |
1000 Ω load: 133 dB (147 dB, Pad on)
2500 Ω load: 138 dB (152 dB, Pad on) |
Signal-to-Noise Ratio
(referenced at 94 dB SPL at 1 kHz) |
84.5 dB
S/N ratio is difference between 94 dB SPL and equivalent SPL of self noise, A-weighted |
Dynamic Range
(at 1 kHz) |
1000 Ω load: 123 dB
2500 Ω load: 128 dB |
Common Mode Rejection
(20 Hz to 20 kHz) |
> 50 dB |
Clipping Level
(20Hz-20 kHz at 1% THD) |
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 |
Self Noise
(typical, equivalent SPL, A-weighted) |
9.5 dB |
| Polarity |
Positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3 |
| Switch |
Attenuator: -15 dB
Low Frequency Response: flat; -6 dB/octave below 115 Hz; -18 dB/octave below 80 Hz |
| Power Requirements |
48 Vdc phantom, 5.4 mA |
| Connector |
3pin professional audio connector (male XLR type) |
| Weight |
642g (22.6 oz.) |
