Overview
With its low-profile and rugged-yet-highly-flexible design, the ES931PMWH hypercardioid condenser gooseneck microphone is a perfect fit for boardrooms, school and government settings, teleconferencing, houses of worship and other installed applications. The microphone, which features UniGuard® RFI-shielding technology for outstanding rejection of radio frequency interference (RFI), attaches to the provided AT8534 wall/ceiling plate power module via a special TA3F-type connector designed to optimize RFI immunity. Switches in the power module permit a +10 dB gain setting for extra sensitive pickup as well as a choice of flat response or low-frequency roll-off (via integral 80 Hz high-pass UniSteep® filter) to help control undesired ambient noise. The power module mounts in a standard metal U.S. single-gang electrical box.This gooseneck mic provides a uniform hypercardioid polar pattern with 100° acceptance angle, comes with a two-stage foam windscreen and is available with low-reflectance black (ES931PMH) or white (ES931PMWH) finish. Additional interchangeable elements – omnidirectional (360°), cardioid (120°) and MicroLine® (90°) – are available separately.
Features

Wall/ceiling plate power module permits permanent installation in standard, single-gang electrical box
Uniform hypercardioid polar pattern with 100° acceptance angle
Low-profile design with low-reflectance finish for minimum visibility
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 minimize pickup of undesired ambient noise
Rugged, easy-to-adjust, small-diameter gooseneck can be positioned quickly into desired shape
Available interchangeable elements permit angle of acceptance from 90° to 360°
Ideal for boardrooms, school and government settings, teleconferencing, houses of worship and other installed applications

Specifications

ELEMENT
Fixed-charge back plate, permanently polarized condenser

POLAR PATTERN
Hypercardioid

FREQUENCY RESPONSE
80-20,000 Hz

LOW FREQUENCY ROLL-OFF
80 Hz, 18 dB/octave

OPEN CIRCUIT SENSITIVITY
-40 dB (10.0 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)
39 g (1.4 oz)

WEIGHT (POWER MODULE)
97 g (3.4 oz)

DIMENSIONS (MICROPHONE)
152.4 mm (6.0") long (with capsule),
8.4 mm (0.33") head diameter,
11.6 mm (0.46") base diameter

DIMENSIONS (POWER MODULE)
71.0 mm (2.80") W x 115.5 mm (4.55") H x 36.0 mm (1.42") D

OUTPUT CONNECTOR (POWER MODULE)
Screw-terminals

OPTIONAL INTERCHANGEABLE ELEMENTS
ESE-O omnidirectional (360°)
ESE-C cardioid (120°)
ESE-ML MicroLine (90°)

ACCESSORIES FURNISHED
AT8534 wall/ceiling plate power module; AT8109(WH) two-stage foam windscreen

AUDIO-TECHNICA CASE STYLE
M41