Shure
Microflex Series Compact Boundary Microphone (Black, Cardioid)
SKU: 664086 · Model: MX391/C
$308.77$352.00
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- •Flat frequency response across the vocal range for uncolored sound
- •Sleek, low-profile design for unobtrusive appearance
- •Interchangeable cardioid, supercardioid, and omnidirectional cartridges that provide optimal choice for each application
- •Balanced, transformerless output for increased immunity to noise over long cable runs
Weight: 1.05 lbsDims: 9.9″ × 4.7″ × 3.2″
Product Details
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.<br />
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The MX391 includes an 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.<br />
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Environmental Requirements<br />
Operating Temperature Range: -18 to 57 degrees C (0 to 135 degrees F)<br />
Relative Humidity: 0 to 95%<br />
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All measurements taken with the microphone mounted on a 76.2 cm x 76.2 cm (30 in. x 30 in.) wooden surface and with the sound source incident at 30 degrees with respect to the surface plane.<br />
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Frequency Response<br />
50 to 17,000 Hz<br />
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Output Impedance (at 1000 Hz)<br />
180 ohms actual (rated at 150 ohms)<br />
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Open Circuit Sensitivity 1 kHz ref. 1 V per Pascal *<br />
Cardioid: -29.6 dB (33.5 mV)<br />
All settings -12 dB at 0 gain; *1 Pascal = 94 dB SPL<br />
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Maximum Sound Pressure Level (1 kHz at 1% Total Harmonic Distortion, 1 k ohm load)<br />
Cardioid: 118.8 dB<br />
All settings +6 dB at 0 gain<br />
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Signal to Noise Ratio (referenced at 94 dB SPL)<br />
Cardioid: 71.4 dB<br />
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Equivalent Output Noise (A-weighted)<br />
Cardioid: 22.6 dB SPL<br />
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Dynamic Range at 1 k ohm Load<br />
96.2 dB<br />
100 dB at 0 gain<br />
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Common Mode Rejection<br />
45 dB minimum, 10 Hz to 100 kHz<br />
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Preamplifier Output Clipping Level<br />
-6 dBV (0.5 V)<br />
12 dB at 0 gain<br />
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Polarity<br />
Positive sound pressure on diaphragm produces positive voltage on pin 2 relative to pin 3 of the preamplifier XLR output connector.<br />
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Power Requirements<br />
11 to 52 Vdc phantom<br />
2.0 mA current consumption