Microflex Boundary Microphone
|
|
By: Shure
Microphones, Headphones & Wireless systems
|
The Shure Microflex Microphone Series
MX 391 is 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.
MX-391: 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.
→ Flat frequency response across the vocal range for uncolored sound→ Interchangeable cartridges that provide a choice of polar pattern for each application→ Sleek, low-profile design for unobtrusive appearance→ RF filtering
Type | Condenser (electret bias) |
Frequency Response | 50–17000 Hz |
Polar Pattern | MX391/O= Omnidirectional; MX391/C= Cardioid; MX391/S= Supercardioid |
Output Impedance | EIA Rated at 150 O (180 O actual) |
Output Configuration | Active balanced |
Sensitivity (at 1 kHz , open circuit voltage) | Cardioid= –30 dBV/Pa (33.5 mV); Omnidirectional= –22 dBV/Pa (81.4 mV); Supercardioid= –28 dBV/Pa (38.5 mV); 1 Pascal=94 dB SPL |
Maximum SPL (1 kHz at 1% THD, 1 kO load) | Cardioid= 119 dB; Omnidirectional= 111 dB; Supercardioid= 118 dB |
Equivalent Output Noise (A-weighted) | Cardioid= 23 dB SPL; Omnidirectional= 15 dB SPL; Supercardioid= 21 dB |
Signal-to-Noise Ratio (referenced at 94 dB SPL at 1 kHz) | Cardioid= 71 dB; Omnidirectional= 80 dB; Supercardioid= 73 dB |
Dynamic Range (1 kO load at 1 kHz) | 96 dB |
Common Mode Rejection (10 Hz–100 kHz) | 45 dB minimum |
Preamplifier Output Clipping Level (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 |
Logic Connections | LED IN: Active low (=1.0V), TTL compatible; Absolute maximum voltage= -0.7V to 50V |
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 Vdc phantom, 2.0 mA |
© 1996 - 2024 | All Rights Reserved
Audio Video Supply Inc.
4542 Ruffner St. Suite 220
San Diego, CA 92111
Prices and specifications subject to change without notice.