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1 Year
$29.99
2 Year
$49.99
3 Year
$59.99
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Review Summary
White
Condenser (electret bias)
50 Hz - 17 kHz
MX391/C: Cardioid
MX391/S: Supercardioid
MX391/O: Omnidirectional
EIA rated at 150 Ohm (180 Ohm actual)
Operating temperature range: -0.4 Degree F - 134.6 Degree F (-18 Degree C - 57 Degree C)
Relative Humidity: 0 - 95%
11 - 52 Vdc phantom, 2.0 mA
At 1 kHz, open circuit voltage; 1 Pascal = 94 dB SPL; All settings -12 dB at 0 gain (internal modification):
Cardioid -29.5 dB (33.5 mV)
Supercardioid -28.3 dB (38.5 mV
Omnidirectional -21.8 dB (81.4 mV)
1 kHz at 1% THD, 1 kOhm load; All settings +6 dB at 0 gain (internal modification):
Cardioid: 118.8 dB
Supercardioid: 117.5 dB
Omnidirectional: 110.7 dB
Cardioid: 22.6 dB SPL
Supercardioid: 21.3 dB SPL
Omnidirectional: 14.5 dB SPL
Referenced at 94 dB SPL at 1 kHz:
Cardioid: 71.4 dB
Supercardioid: 72.7 dB
Omnidirectional: 79.5 dB
96.2 dB
45 dB minimum, 10 Hz to 100 kHz
1% THD: -6 dBV (0.5 V)
Positive sound pressure on diaphragm produces positive voltage on pin 2 relative to pin 3 of the preamplifier XLR output
042406576864
Boundary microphone provides high-quality sound for a wide range of applications due to its interchangeable condenser cartridge and low-profile design.
Equipped with features like programmable, silent membrane switches, logic inputs and outputs, Microflex Boundary Microphones are the high-quality solution for a range of applications such as altars, boardrooms and distance learning centers. Every Microflex Boundary microphone features a choice of interchangeable condenser cartridges.
MX391: Includes attached 4 meter (12 ft) cable terminated with a 4-pin mini connector and separate preamplifier. A rubber strain relief is provided for applications that require removing the 4-pin mini connector and connecting the mic cable directly to screw terminals in the preamplifier.