Shure Incorporated Microflex Series Wireless Boundary Microphone MX690

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.
Transmitter Specs
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 Specs
Type
Condenser (electret bias)
Frequency Response
50® 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 k 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.