MX690 Microflex Wireless Boundary Microphone

Wireless, boundary microphone offers total freedom of placement with no holes to drill or cables to run.

Product Details

The Microflex® Wireless Boundary Microphone offers total freedom of placement with no holes to drill or cables to run for installation.

The Wireless Boundary Microphone is the perfect solution for conference and meeting spaces where users demand flexibility and high performance. Compatible with Shure SLX® Wireless Systems.



  • Sleek, low profile design
  • Frequency agile, microprocessor controlled transmitter
  • Bi-color status indicator
  • IR link to SLX receiver for automatic frequency synchronization
  • Programmable mute function
  • Battery level indicator
  • Operates on two AA batteries
  • Logic output for remote LED and mute control
  • CommShield Technology for improved RF filtering
Form Factor
Model Line

Available Bands

H5 (518.2 – 541.8 MHz)
J3 (572.2 – 595.8 MHz)
L4 (638.2 – 661.8 MHz)
G4 (470.12 – 493.82 MHz)
G5 (494.12 – 517.75 MHz)

Which Band Should I Choose?

Find out which band for the MX690 has the most available wireless channels in your location. Already own the MX690? Use the Wireless Frequency Finder Tool to find frequencies.

Type Condenser (electret bias)
Frequency Response 50–17000 Hz
Polar Pattern Cardioid

Additional specifications are available in the user guide.

Software & Downloads


File Language Type File Size
Microflex Microphones Product Brochure English PDF 1.93 mb

CAD Drawings

File Language Type File Size
MX690 CAD Drawing English ZIP 114 kb

Specification Sheets

File Language Type File Size
MX690 MX890 Specification Sheet English PDF 326 kb

User Guides

File Language Type File Size
MX690 MX890 User Guide English PDF 744 kb

Product Support

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Instructional articles, guides, demos and more! Our experts offer industry-proven tips and tricks to help you get the most from your gear.

Find Wireless Channels for Your System

The Wireless Frequency Finder tool provides recommended channels for all Shure wireless systems.

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