Shure MX391 – Microflex Boundary Condenser Microphone

Product Overview

The Shure MX391 Microflex is a low-profile boundary condenser microphone for installed commercial AV audio in conference rooms, boardrooms, and meeting spaces. Its compact, unobtrusive design sits flat on a table or lectern to capture clear speech for conferencing and recording. Available in cardioid, supercardioid, and omnidirectional patterns, it lets AV integrators match pickup to the room.

Product Description

The MX391 delivers dependable boundary microphone performance for tabletop speech capture in commercial meeting spaces. The electret condenser element provides a 50 Hz to 17 kHz frequency response tuned for intelligible voice pickup, while the separate inline preamplifier terminates in an XLR output for straightforward integration with mixers and DSP. The microphone is offered in three polar patterns so integrators can select omnidirectional coverage for group tables, or cardioid and supercardioid patterns to tighten pickup and reduce room noise. Its low-profile boundary form factor keeps the conference table clean and minimizes visual distraction in board-level rooms. This listing covers the MX391 in the polar pattern selected at checkout.

Key Features

• Low-Profile Boundary Design — The compact, unobtrusive housing sits flat on tables and lecterns for discreet speech capture in meeting spaces.
• Selectable Polar Patterns — Available in cardioid, supercardioid, and omnidirectional versions so integrators can match pickup to the room.
• Speech-Tuned Frequency Response — The 50 Hz to 17 kHz response is optimized for clear, intelligible voice reproduction in conferencing applications.
• Separate Inline Preamplifier — The detachable preamp with XLR output integrates cleanly with commercial mixers and DSP.
• Phantom-Powered Condenser — The electret condenser element operates on standard 11–52 Vdc phantom power for easy deployment.

Technical Specifications