Audio Technica Engineeredsound ES947C/TB3 Product Information

Product Information
Thank you for purchasing this product. Before using the product, read through the user manual to ensure that
you will use the product correctly.
Please keep this manual for future reference.
■ Features
• Designed for surface-mount applications such as conferencing, recording, monitoring and other demanding
sound pickup applications
• Low-profile element provides uniform cardioid polar pattern with 120° acceptance angle
• Miniature, space-saving design enables highly inconspicuous tabletop, ceiling and wall mounting
• Self-contained power module with TB3M (mini-XLR) output connector
• Includes a TA3F-to-XLR cable for use with standard XLR inputs
• Rugged all-metal case with a two-layer perforated grille
• Rubber Isolators provide mechanical dampening of mounting-surface vibration
• Requires 11V to 52V DC phantom power
• UniGuard® RFI-shielding technology offers outstanding rejection of radio frequency interference (RFI)
■ Description
ES947C/TB3 cardioid boundary microphone is an even smaller footprint and a great choice for installations with
limited space or where a very clean, inconspicuous look is desired. The miniature size also gives you the same
clear, highly intelligible audio of its larger sibling, mounting unobtrusively in tabletops, ceilings or panels for
conferencing, recording, monitoring and other demanding sound pickup applications.
Protected by a rugged all-metal case with a two-layer steel mesh grille, the microphone's cardioid polar pattern
affords a 120° pickup angle, while its UniGuard® RFI-shielding technology provides outstanding rejection of
radio frequency interference (RFI).
The ES945C/TB3 is equipped with a self-contained power module with a TB3M (mini-XLR) output connector,
eliminating the need for an external power module. The power module can be powered from any external 11V
to 52V DC phantom power supply. It also comes with a TA3F-to-XLR cable, allowing for installation with
standard XLR inputs. The microphone is black colour, and comes with a pair of rubber isolators for optional
mechanical isolation from the mounting surface.
Avoid leaving the microphone in the open sun or in areas where temperatures exceed 43°C for extended
periods. Extremely high humidity should also be avoided.
■ Safety precaution
Although this product was designed to be used safely, failing to use it correctly may result in an accident. To
ensure safety, observe all warnings and cautions while using the product.
■Cautions for the product
• Do not subject the product to strong impact to avoid malfunction.
• Do not disassemble, modify or attempt to repair the product.
• Do not handle the product with wet hands to avoid electric shock or injury.
• Do not store the product under direct sunlight, near heating devices or in a hot, humid or dusty place.
■ Connection procedure
Connect the output terminals of the microphone cable to a device that has a microphone input
(balanced input) compatible with a phantom power supply. The cable connector is an XLRM-type
with polarity as shown in the figure below.
Cable Output terminals
PIN1 (ground) PIN2 (hot)
PIN3
(cold)
This product requires 48 V
DC phantom power.
Miniature Cardioid Condenser Boundary Microphone ES947C/TB3
■ Specifications
Element
Polar pattern
Frequency response
Open circuit sensitivity
Impedance
Maximum input sound level
Dynamic range (typical)
Signal-to-noise ratio*
Phantom power requirements
Weight
Dimensions
Output connector
Included accessories
Colour
• 1 Pascal = 10 dynes/cm = 10 microbars = 94 dB SPL
2
* Typical, A-weighted, using Audio Precision System One.
For product improvement, the product is sublect to modification without notice.
■Polar pattern
330°
300°
270°
240°
210°
SCALE IS 5 DECIBELS PER DIVISION
■Frequency response
20
10
0
-10
-20
-30
10 100
LEGEND
■Dimensions
Ø 20
Front-of-mic indicator
Rubber isolators
Nut
(Unit: mm)
M14P=1
Audio-Technica Corporation
2-46-1 Nishi-naruse, Machida, Tokyo 194-8666, Japan
©2017 Audio-Technica Corporation
Global Support Contact: www.at-globalsupport.com
Fixed-charge back plate, permanently polarized condenser
Cardioid
70 - 15,000 Hz
-38 dB re 1V at 1 Pa
100 ohms
135 dB SPL (1 kHz at 1% THD)
110 dB (1 kHz at Max SPL)
69 dB (1 kHz at 1 Pa, A-weighted)
11-52 V DC, 2 mA
31 g
60.5 mm long, 20 mm head diameter
Integral 3-pin TB3M-type
Rubber isolator x 2, Nut,
7.6 m Microphone cable (TA3F, XLRM)
Black
0°
30°
60°
LEGEND
200 Hz
90°
1 kHz
5 kHz
8 kHz
120°
150°
180°
10 dB
1k 10k 100k
Frequency in Hertz
0°, 50cm
Table/ceiling hole size
Table
When using isolators
When not using isolators
10-FEB-2021 Form No.ATGC-L0402-21