Shure MX690 MicroFlex Wireless Cardioid Boundary Microphone (H19 Band - 542-572 MHz)


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Dale #:SHUR-MX690H19

Availability: Usually ships in 5 - 10 Days

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  • 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
  • Operating Range30 m (100 ft.)
    Frequency Stability±10 ppm
    Maximum Frequency Deviation45 kHz
    Oscillator TypePhase-locked loop (PLL) controlled synthesizer
    Power Requirements3V (2 AA alkaline or rechargeable batteries)
    Battery Life>=8 hours (alkaline)
    Power Consumption130 mA, ±15 mA
    Operating Temperature Range-18–57 °C (0–135 °F)
    Dimensions43 mmH x 87 mmW x 148 mmD (1 11/16 x 3 3/8 x 5 13/16 in.)
    Weight:Net: 318 g (11.2 oz)
    Packaged516 g (18.2 oz)
    Microphone Specifications
    TypeCondenser (electret bias)
    Frequency Response50–17000 Hz
    Polar Pattern (at 1 kHz)Cardioid
    Sensitivity (at 1 kHz , open circuit voltage)–33 dBV/Pa (22 mV);1 Pascal=94 dB SPL
    Dynamic Range (1 kohms load at 1 kHz)96 dB
    Common Mode Rejection (10 Hz to 100 kHz)45 dB minimum
    Preamplifier Output Clipping Level (1% THD)–6 dBV (0.5 V)
    PolarityPositive sound pressure on diaphragm produces positive voltage on pin 2 relative to pin 3 of output XLR connector or tip of 1/4” phone plug.
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