MX690 Microflex Wireless Boundary Microphone

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.

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

• 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

Specification Sheet (MX690, MX890, English)

Transmitter Specifications

Operating Range
30 m (100 ft.)
Note: Actual range depends on RF signal absorption, reflection, and interference

Frequency Stability
±10 ppm

Maximum Frequency Deviation
45 kHz

Oscillator Type
Phase-locked loop (PLL) controlled synthesizer

Power Requirements
3V (2 AA alkaline or rechargeable batteries)

Battery Life
≥8 hours (alkaline)

Power Consumption
130 mA, ±15 mA

Operating Temperature Range
-18–57 °C (0–135 °F)

Note: Battery may limit this range

Dimensions
43 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)

Packaged: 516 g (18.2 oz)

Microphone Specifications

Type
Condenser (electret bias)

Frequency Response
50–17000 Hz

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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 kΩ 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)

Polarity
Positive 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.

• FAQ's for MX690
• Specification Sheet (MX690, MX890, English)
• CommShield Technology White Paper
• RF and GSM Resistance