Description
The Shure The MX391WC is a supercardioid miniature white condenser boundary microphone with an in-line preamp and a 12 foot (4 meter) attached cable that terminates to a 4-pin mini xlr connector. 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.
Features:
- Flat frequency response across the vocal range for uncolored sound.
- Interchangeable cardioid, supercardioid, and omnidirectional cartridges that provide optimal choice for each application.
- Sleek, low-profile design for unobtrusive appearance.
- Balanced, transformerless output for increased immunity to noise over long cable runs.
Specifications:
- Type Condenser (electret bias)
- Frequency Response 50 Hz – 17 kHz
- Output Impedance EIA rated at 150 ohm (170 ohm actual)
- Output Configuration Active balanced
- Sensitivity at 1 kHz, open circuit voltage; 1 Pascal = 94 dB SPL
- Cardioid: -35 dBV/Pa (18 mV)
- Supercardioid: -34 dBV/Pa (21 mV)
- Lobar: -33 dBV/Pa (22 mV)a
- Maximum SPL 1 kHz at 1% THD, 1 k load Cardioid: 121 dB
- Supercardioid: 120 dB
- Lobar: 121 dB SPL
- Equivalent Output Noise A-weighted Cardioid: 28 dB SPL
- Supercardioid: 27 dB SPL
- Lobar: 36 dB
- Signal-to-Noise Ratio referenced at 94 dB SPL at 1 kHz
- Cardioid: 66 dB
- Supercardioid: 67 dB
- Lobar: 68 dB
- Dynamic Range 1 k load at 1 kHz 93 dB
- Common Mode Rejection 10 Hz to 100 kHz 45 dB minimum
- Preamplifier Output Clipping Level 1% THD -8 dBV (0.4 V)
- Polarity 3-Pin XLR: Positive sound pressure on diaphragm produces positive voltage on pin 2 relative to pin 3 of output XLR connector.
- Polarity 5-Pin XLR: Positive sound pressure on diaphragm produces positive voltage on pin 4 relative to pin 2 of output XLR connector.
- Logic Connections LED IN: Active low (=1.0 V), TTL compatible. Absolute maximum voltage: -0.7 V to 50 V.
- LOGIC OUT: Active low (=1.0 V), sinks up to 20 mA, TTL compatible. Absolute maximum voltage -0.7 V to 50 V (up to 50 V through 3 kO).
- Mute Switch Attenuation -50 dB minimum
- Cable MX400DP: 6 m attached cable with shielded audio pair terminated at a 3-pin male XLR and three unterminated conductors for logic control
- Environmental Conditions Operating temperature: -18 – 57 °C
- Storage temperature: -29 – 74 °C
- Relative humidity: 0 – 95%
- Power Requirements 48 – 52 Vdc phantom, 8.0 mA
revans49 (verified owner) –
Solid product that meets expectations. Happy with my purchase and would recommend.
Nicole R. (verified owner) –
I purchased this to replace my old one and fantastic value! The quality-to-price ratio is unbeatable. This Shure MC391W-C Miniature Cardioid Condenser Boundary Microphone with cable and preamp – White exceeded my expectations.
Donald W. (verified owner) –
Absolutely fantastic! The Shure MC391W-C Miniature Cardioid Condenser Boundary Microphone with cable and preamp – White works perfectly. I was hesitant to order online but this turned out to be exactly what I needed. Very pleased.
Sophia F. (verified owner) –
Love the product! Took off one star because packaging could be better. Would buy again.
Olivia Gutierrez –
Love the product! Took off one star because packaging could be better. Two thumbs up!
S. W. –
Finally got this after doing some research and exceptional! The build quality is impressive and it does everything it’s supposed to do and more.
Dennis (verified owner) –
Got this based on a recommendation and does not work as described. Very frustrating experience overall.