Shure MX391 - Page 6

Shure Incorporated
6/7
Self Noise
A-weighted
Cardioid 23 dB SPL
Omnidirectional 15 dB SPL
Supercardioid 21 dB
Signal-to-Noise Ratio
Ref. 94 dB SPL at 1 kHz
Cardioid 71 dB
Omnidirectional 80 dB
Supercardioid 73 dB
Dynamic Range
1 kΩ load, @ 1 kHz
96 dB
Common Mode Rejection
45 dB, minimum
Clipping Level
at 1% THD
–6 dBV (0.5 V)
Polarity
Positive sound pressure on diaphragm produces positive voltage on pin 2 relative to pin 3 of output XLR
connector
Environmental Conditions
Operating Temperature –18–57°C (0–135°F)
Storage Temperature –29–74°C (–20–165°F)
Relative Humidity 0–95%
Power Requirements
11–52 V DC, 2.0 mA