Shure Microflex MX391 Wired Boundary, Condenser Microphone - White

The Shure Microflex MX391 is a premier wired boundary condenser microphone designed to deliver clear, natural sound in modern conference rooms, classrooms, and teaching environments. With a flat frequency response across the vocal range, it captures voices with exceptional accuracy and minimal coloration, ensuring every speaker is heard as intended. The MX391’s white, low-profile housing blends seamlessly into contemporary interiors, keeping attention on the discussion rather than the mic. A standout feature is the interchangeable cartridge system, which lets you fine-tune the microphone’s pickup pattern to match the room and application—choose cardioid for focused sound, supercardioid for tighter pick-up with reduced room noise, or omnidirectional for all-around coverage. This flexibility makes the MX391 an adaptable solution for a wide range of spaces and scenarios, from executive boardrooms to dynamic training environments.

• Uncolored sound with a flat vocal-range response: The MX391 delivers a natural, transparent voice pickup that minimizes unwanted coloration, making it suitable for speech and presentation clarity in any room.
• Interchangeable cartridges for versatile coverage: Swap between cardioid, supercardioid, and omnidirectional cartridges to tailor the mic’s pick-up pattern to the room size, seating arrangement, and the number of participants.
• Low-profile, white design: A sleek, unobtrusive footprint that blends with modern conference tables and educational spaces, reducing visual distraction while still delivering superior performance.
• Balanced, transformerless output for resilience against interference: The MX391’s output design enhances immunity to hum and noise, helping to preserve signal integrity in environments with multiple electronic devices.
• Reliable performance for a wide range of applications: Built for daily use in conference centers, classrooms, training facilities, and public venues, the MX391 is designed to stay consistent in diverse acoustic settings.

Technical Details of Shure Microflex MX391

• Type: Boundary condenser microphone
• Color: White
• Polar patterns: Interchangeable cardioid, supercardioid, and omnidirectional cartridges
• Frequency response: Flat across vocal range
• Output: Balanced, transformerless
• Power: Phantom power required (12–52 V typical)
• Construction: Durable metal housing
• Applications: Conference rooms, classrooms, lecture halls, training facilities

How to install Shure Microflex MX391

Installing the MX391 is designed to be straightforward in a variety of spaces. Begin by selecting the appropriate cartridge for your room’s acoustics and seating layout, using the interchangeable cartridge system to optimize pickup. Position the microphone on a flat surface at the center of the table or the podium area, aiming toward the speakers to capture clear voice signals while minimizing pickup of table noise and nearby speakers. Connect the microphone to a mixer, preamplifier, or conferencing system that provides phantom power within the required voltage range. Ensure the system is powered off during connection, then power it on and test the signal. If needed, adjust the cartridge to refine pickup pattern after listening in the actual room environment. For environments with potential feedback or loudspeakers, prefer the cardioid or supercardioid cartridge to minimize room reflections and improve intelligibility. Regularly inspect the microphone and its mounting hardware to maintain a secure, stable installation in high-traffic areas.

Tips for optimal performance:

• Place the MX391 near the center of the table and at a height that aligns with typical speaking height to capture consistent vocal levels.
• Avoid placing the microphone directly opposite loudspeakers or near high-volume sources to minimize feedback risk.
• Use the appropriate cartridge for the room’s size and audience layout to balance direct sound with ambient room reflections.
• Verify phantom power availability on the connected audio equipment, ensuring compatibility with the microphone’s requirements.
• Keep the microphone surface clean and free of obstructions to preserve signal quality and durable performance.

Why choose the MX391 for your space?

The MX391 combines Shure’s renowned audio precision with practical, everyday usability. Its flat frequency response ensures voices remain natural and intelligible, even during rapid speech or dynamic presentations. The ability to switch polar patterns makes the MX391 a future-proof choice for evolving room configurations or changing audience sizes. The white, low-profile enclosure minimizes visual distraction and helps maintain a professional, polished appearance for video and live-streamed events. The balanced, transformerless output reduces susceptibility to cable noise and electrical interference, providing dependable performance in rooms with multiple devices and wireless systems. All of these attributes come together to create a microphone that sounds great on day one and continues to deliver reliable, high-quality sound day after day.

In addition to performance, the MX391 is designed with ease of integration in mind. It works with standard audio pathways used in modern conference setups, from traditional analog mixers to digital signal processing systems and integrated conferencing platforms. Its modular cartridge system also means that a single microphone can adapt to multiple room configurations without needing a full replacement, saving time and money for IT managers, facilities staff, and AV technicians. With its durable build and Shure’s trusted engineering heritage, the MX391 is built to withstand the rigors of frequent use in busy spaces, making it a dependable cornerstone of any meeting or learning environment.

Whether you are outfitting a formal boardroom, equipping a classroom for hybrid learning, or configuring a training facility for large seminars, the MX391 provides the audio clarity, flexibility, and reliability needed to ensure every voice is heard. Its white finish and discreet footprint also help keep focus on the content rather than the equipment, contributing to a more engaging and professional presentation. By selecting the MX391, you’re choosing a microphone that balances sophisticated engineering with practical, real-world performance.

Frequently asked questions

• What spaces is MX391 designed for?

  MX391 is well-suited for conference rooms, classrooms, lecture halls, and training facilities where unobtrusive, high-quality capture is important.

• Can I switch pickup patterns on the MX391?

  Yes. MX391 features interchangeable cardioid, supercardioid, and omnidirectional cartridges to tailor pickup to your space.

• Does the MX391 require phantom power?

  Yes. The microphone requires phantom power from the connected interface or mixer, within its specified voltage range.

• Is the MX391 suitable for video conferencing?

  Absolutely. Its flat frequency response and clean output help ensure clear speech transmission for video calls and streaming.

• What color is the MX391?

  The MX391 comes in a white finish designed to blend with whiteboards, desks, and modern interiors.