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audio Cardioid Condenser Boundary Microphone ES947C TB3, ES947WC TB3 Manual

audio Cardioid Condenser Boundary Microphone ES947C TB3, ES947WC TB3 Manual Image

Cardioid Condenser Boundary Microphone
User Manual

Safety precautions

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 a 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.

Notes on use

  •  Do not swing or carry the microphone by the cable to prevent the microphone from becoming disconnected or damaged.
  •  Do not wind the cable around the rack or allow the cable to become pinched.
  • The microphone should be placed on a flat, unobstructed mounting surface.
  •  Placing any object on a surface (such as a conference table) before its finish is fully cured may result in damage to the finish.

Using the product

Included accessories

audio Cardioid Condenser Boundary Microphone - accessories

  1.  Rubber isolators
  2.  Nut
  3.  7.6 m (24.9′) Microphone cable (TA3F, XLR-M)

How to mount the product

Table/ceiling hole size (when using isolators)

Table/ceiling hole size (when not using isolators)

Example: Mounting on a table

  1. Front-of-mic indicator
  2. Rubber isolators
  3. Nut
  4. Table

Connection procedure

The output connector is an XLR-M type with polarity as shown in the figure below.

  1. PIN1 (ground)
  2.  PIN2 (hot)
  3. PIN3 (cold)


audio Cardioid Condenser Boundary Microphone - Dimensions


Element Fixed-charge back plate, permanently polarized condenser
Polar pattern Cardioid
Frequency response 70 to 15,000 Hz
Open circuit sensitivity -38 dB (0 dB = 1 V/Pa, 1 kHz)
Impedance 100 ohms
Maximum input sound level 135 dB SPL (1 kHz at 1% THD)
Dynamic range 110 dB (1 kHz at Max SPL)
Signal-to-noise ratio 69 dB (1 kHz at 1 Pa, A-weighted)
Phantom power requirements 11-52 V DC, 2 mA
Weight 31 g (1.1 oz)
Dimensions 60.5 mm (2.38″) long, 20 mm (0.79″) head diameter
Output connector TB3M-type
Included accessories Rubber isolator x 2, Nut, 7.6 m (24.9′) Microphone cable (TA3F, XLR-M)
  • 1 Pascal = 10 dynes/cm2 = 10 microbars = 94 dB SPL
  • For product improvement, the product is subject to modification without notice.

Polar pattern/Frequency response

Polar pattern

Frequency response

Audio-Technica Corporation
2-46-1 Nishi-Naruse, Machida, Tokyo 194-8666, Japan
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