- Description
Details
Shure Microflex MX300 Series microphones are surface-mounted electret condenser microphones designed primarily 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. Interchangeable cartridges provide the installer with greater flexibility and make it possible to easily reconfigure microphone coverage as the need arises. The MX392 models include an internal pre amplifier.
MX300 Series microphones take advantage of the principle that, at a barrier or boundary, the sound pressure level doubles. When placed near a sufficiently large boundary surface, the microphone has 6 dB higher sensitivity and approximately 3 dB greater direct-to-reverberant sound ratio.- Features
Features
- Flat frequency response across the vocal range for uncolored sound
- Interchangeable cardioid, supercardioid and omnidirectional cartridges
- Sleek, low-profile design for unobtrusive appearance
- Balanced, transformerless output for increased immunity to noise over long cable runs
- Low susceptibility to electromagnetic hum and RFI
- Programmable on/off switch and LED on/off indicator
- Logic input/output terminals for remote control or use with automatic mixers
- Bottom Exit option available
- Specification
Frequency Response 50 to 17,000 Hz Polar Pattern Cardioid, Supercardioid, Omnidirectional Output Impedance EIA Rated at 150 ohms (180 ohms actual) Environmental Requirements Operating Temperature Range: -18 to 57 degrees C; Relative Humidity: 0 to 95% Power Requirements 11 to 52 Vdc phantom; 2.0 mA current consumption Switch Attenuation 50 dB minimum Dynamic Range 94.0 dB Common Mode Rejection 45 dB minimum, 10 Hz to 100 kHz Polarity Positive sound pressure on diaphragm produces positive voltage on pin2 relative to 3 of output conn. Preamplifier Output Clipping Level -6 dBV (0.5 V) Switch Attenuation 50 dB minimum Sensitivity (at 1 kHz, open circuit voltage) Cardioid –27.5 dBV/Pa (42.2 mV) Supercardioid –26.5 dBV/Pa (47.3 mV) Omnidirectional –22.0 dBV/Pa (79.4 mV) Maximum Sound Pressure Level (1 kHz at 1% Total Harmonic Distortion, 1 k ohm load) 117.0 dB Cardioid 117.0 dB Supercardioid 116.0 dB Omnidirectional 111.5 dB Signal to Noise Ratio (referenced at 94 dB SPL) 71.0 dB Cardioid 71.0 dB Supercardioid 72.0 dB Omnidirectional 76.5 dB Equivalent Output Noise (A-weighted) 23.0 dB Cardioid 23.0 dB Supercardioid 22.0 dB Omnidirectional 17.5 dB Logic Connections LED IN Active low ( v 1.0v), TTL compatible. Absolute maximum voltage: -0.7 V to 50 V SWITCH OUT Active low ( v 0.5V), sinks up to 20mA, TTL com- patible. Absolute maximum voltage: -0.7V to 24V (up to 50 V through 3k Ω ) Dimensions (H x W x L) 4.26" (108.3 mm) x 3" (76.2 mm) x 0.83" (21.16 mm) - Reviews
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