Overview
This phantom-powered cardioid condenser boundary microphone features a 3-pin XLR output connector with a capacitive touch switch that enables local muting of the microphone.
Designed for clear, highly intelligible conferencing, recording, monitoring and other demanding sound pickup applications, the ES947C/FM3 mounts unobtrusively in tabletops or panels, but includes a highly visible two-state RGB LED ring (7 selectable colors + OFF) to indicate mute status.
The microphone’s cardioid polar pattern provides a 120° pickup angle. A rugged all-metal case with a two-layer steel mesh grille protects the microphone element, while our UniGuard® RFI-shielding technology provides outstanding rejection of radio frequency interference (RFI).
The ES947C/FM3 is equipped with a self-contained power module, eliminating the need for an external one, and comes with a pair of rubber isolators for optional mechanical isolation from the mounting surface.
See below for the entire family of ES945O and ES947C boundary microphones:
ES945O/XLR
 Water-resistant Omnidirectional Condenser Boundary Microphone with XLR Output
ES947C/XLR
 Water-resistant Cardioid Condenser Boundary Microphone with XLR Output
ES945O/TB3
 Miniature Omnidirectional Condenser Boundary Microphone with TB3-to-XLR Output
ES947C/TB3
 Miniature Cardioid Condenser Boundary Microphone with TB3-to-XLR Output
ES945O/FM3
 Omnidirectional Condenser Boundary Microphone with 3-Pin XLR Output and Local Muting
ES947C/FM3
 Cardioid Condenser Boundary Microphone with 3-Pin XLR Output and Local Muting
ES945O/FM5
 Omnidirectional Condenser Boundary Microphone with 5-Pin XLR Output and Remote Muting
ES947C/FM5
 Cardioid Condenser Boundary Microphone with 5-Pin XLR Output and Remote Muting
Microphones
| Element | Fixed-charge back plate, permanently polarized condenser | 
| Polar Pattern | Cardioid | 
| Frequency Response | 70-15,000 Hz | 
| Open Circuit Sensitivity | -37 dB (0 dB = 1V/Pa, 1 kHz) | 
| Output Impedance | 60 ohms |