Cardioid Condenser Hanging Microphone Designed for permanent installation, the U853PM cardioid condenser hanging microphone comes equipped with a wall/ceiling plate power module. The phantom-powered microphone features UniGuard® innovations that offer unsurpassed immunity from radio frequency interference. It accepts interchangeable elements, available in cardioid, hypercardioid, omnidirectional and UniLine® line cardioid polar patterns. Its 80 Hz low-cut UniSteep® filter reduces pickup of low-frequency ambient noise. Designed for suspension over choirs, instrumental groups and theater stages Wall/ceiling plate power module permits permanent installation in standard metal U.S. single gang electrical box Superior off-axis rejection for maximum gain before feedback UniGuard® RFI-shielding technology offers outstanding rejection of radio frequency interference (RFI) UniSteep® filter provides a steep low-frequency attenuation to improve sound pickup without affecting voice quality Accepts interchangeable elements to permit angle of acceptance from 90° to 360° Low-profile design with low-reflectance finish for minimum visibility ELEMENT Fixed-charge back plate, permanently polarized condenser POLAR PATTERN Cardioid FREQUENCY RESPONSE 30-20,000 Hz LOW FREQUENCY ROLL-OFF 80 Hz, 18 dB/octave OPEN CIRCUIT SENSITIVITY –39 dB (11.2 mV) re 1V at 1 Pa IMPEDANCE 200 ohms MAXIMUM INPUT SOUND LEVEL 128 dB SPL, 1 kHz at 1% T.H.D. DYNAMIC RANGE (typical) 102 dB, 1 kHz at Max SPL SIGNAL-TO-NOISE RATIO 68 dB, 1 kHz at 1 Pa PHANTOM POWER REQUIREMENTS 11-52V DC, 4 mA typical SWITCHES Flat, roll-off; 0 dB/+10 dB gain setting WEIGHT (MICROPHONE) 0.5 oz (14 g) WEIGHT (POWER MODULE) 3.4 oz (97 g) DIMENSIONS (MICROPHONE) 1.34" (34.0 mm) long, 0.48" (12.2 mm) diameter DIMENSIONS (POWER MODULE) 2.80" (71.0 mm) W x 4.55" (115.5 mm) H x 1.42" (36.0 mm) D OUTPUT CONNECTOR (POWER MODULE) Screw terminals CABLE 25.0' (7.6 m) long (permanently attached to microphone), 0.13" (3.2 mm) diameter, 2-conductor, shielded cable with TA3F-type connector OPTIONAL INTERCHANGEABLE ELEMENTS UE-H hypercardioid (100°); UE-O omnidirectional (360°); UE-UL UniLine® (90°) ACCESSORIES FURNISHED AT8153 two-stage foam windscreen; AT8451 steel hanger; AT8534 wall/ceiling plate power module; AT8438 5/8"-27 stand adapter AUDIO-TECHNICA CASE STYLE M12