- Description
Details
Shure Microflex MX391 Series microphones are small, surface-mounted electret condenser microphones designed for mounting on conference tables, stage floors, and lecterns. Their high sensitivity and wide frequency range make them especially suitable for picking up speech and vocals in sound reinforcement and recording applications.
Equipped with features like programmable, silent membrane switches, logic inputs and outputs, and LED indicators, 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 12 ft (4 m) 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.- Features
Features
- Flat frequency response across the vocal range for uncolored sound
- Interchangeable cardioid, supercardioid and omnidirectional cartridges
- Your choice of black or off-white
- Sleek, low-profile design for unobtrusive appearance
- Balanced, transformerless output for increased immunity to noise over long cable runs
- Specification
Polar Pattern Cardioid, Supercardioid, Omnidirectional Environmental Requirements Operating Temperature Range: -18 to 57 degrees C; Relative Humidity: 0 to 95% Frequency Response 50 to 17,000 Hz Output Impedance (at 1000 Hz) 180 ohms actual (rated at 150 ohms) Dynamic Range at 1 k ohm Load 96.2 dB; 100 dB at 0 gain Common Mode Rejection 45 dB minimum, 10 Hz to 100 kHz Preamplifier Output Clipping Level -6 dBV (0.5 V) Polarity Positive sound pressure on diaphragm produces positive voltage on pin 2 relative to pin 3 of the preamplifier XLR output connector Power Requirements 11 to 52 Vdc phantom; 2.0 mA current consumption Pickup Angle Cardioid (–3 dB) = 130 ° Supercardioid (–3 dB) = 115 ° Omnidirectional = 360 ° Maximum Sound Pressure Level (1 kHz at 1% Total Harmonic Distortion, 1 k ohm load) Cardioid 118.8 dB Supercardioid 117.5 dB Omnidirectional 110.7 dB Signal to Noise Ratio (referenced at 94 dB SPL) Cardioid 71.4 dB Supercardioid 72.7 dB Omnidirectional 79.5 dB Equivalent Output Noise (A-weighted) Cardioid 22.6 dB SPL Supercardioid 21.3 dB SPL Omnidirectional 14.5 dB SPL Open Circuit Sensitivity 1 kHz ref. 1 V per Pascal Cardioid –29.6 dB (33.5 mV) Supercardioid –28.3 dB (38.5 mV) Omnidirectional –21.5 dB (81.4 mV) Dimensions (H x W x D) 2.09" (5.3 cm) x 3.13" (7.9 cm) x 0.75" (1.9 cm) - Reviews
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