With three cardioid condenser elements in a single housing, the phantom-powered U843R offers a remarkably versatile tool for surface-mount installations. Levers on the microphone base allow easy reorientation of two elements to offer 360° or 300° coverage. Since elements can be powered and used individually or in any combination, further flexibility is easily achieved. For example, with two elements powered, the microphone can provide a figure-of-eight polar pattern; with a single element powered, the microphone functions as a standard cardioid boundary microphone. Installation and repositioning are extremely quick, thanks to four recessed pathways on the base of the microphone that enable the user to route the cable as required to accommodate any installation requirements; no tools or disassembly are needed. The microphone also offers Audio-Technica’s innovative UniGuard® RFI-shielding technology.
Three cardioid condenser elements mounted in a single housing
Easily reposition two elements (via levers on the microphone base) to offer 360° or 300° coverage; each element can be powered and used individually or in any combination
Also functions as a stereo boundary microphone
Provides full, efficient and flexible coverage—fewer microphones required
Small-diameter capsules near boundary eliminate phase distortion and deliver clear, high-output performance
Low-frequency attenuation improves sound pickup without affecting voice quality
Cable routes through any of four recessed pathways on the microphone base (or down for direct feed through a table surface); no tools or disassembly required
UniGuard® RFI-shielding technology offers outstanding rejection of radio frequency interference (RFI)
Heavy die-cast case and non-slip silicone foam bottom pad minimizes coupling of surface vibration to the microphone
Low-profile design with low-reflectance finish for minimum visibility
Fixed-charge back plate, permanently polarized condenser
Hemispherical Cardioid x3 (combine to omni-directional or bidirectional)
Open Circuit Sensitivity
–37 dB (14.1 mV) re 1V at 1 Pa
Maximum Input Sound Level
134 dB SPL, 1 kHz at 1% T.H.D.
Dynamic Range (Typical)
105 dB, 1 kHz at Max SPL
65 dB, 1 kHz at 1 Pa
Phantom Power Requirements
11-52V DC, 2 mA typical
The lever of elements can adjust the proper position
Weight (Less Cable)
20.0 mm – height
85.0 mm – maximum body diameter
7.6 m long (permanently attached to microphone), 4 mm diameter, 6 conductor, shielded cable; output end stripped and tinned for connection to electronic device
Soft protective pouch
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