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Etymotic ER3C-300 Insert Earphones

Key Features:

  • Incorporates "touch-proof" electrical connection for safety
  • Duplicates ER•3A smooth frequency response
  • Provides 30+ dB external noise exclusion – equivalent to a single-wall booth when used with deeply-sealed foam eartips
  • Provides 70+ dB isolation (interaural attenuation) between ears; reduces the need for masking
  • Reduces test/retest variability compared to supra-aural earphones
  • Eliminates test errors due to collapsed ear canals
  • Simplifies RECD (Real-Ear-to-Coupler-Difference) measurements
  • May be calibrated in a 2-cc coupler, occluded ear simulator, or 0.4-cc coupler

Product Data:

MSRP KSD SKU Barcode MPN
From£589.99 P003170 n/a ER3C-300
MSRP From£589.99
KSD SKU P003170
Barcode n/a
MPN ER3C-300

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Etymotic ER3C Insert Earphones - 300 ohm

ER3C earphones are the next generation of insert earphones, replacing ER•3A earphones, which have been the worldwide standard for audiometric insert earphones since 1985.

The frequency response and performance characteristics of ER•3C earphones are virtually identical to the original ER•3A earphones at all audiometric frequencies.

Features

  • Incorporates "touch-proof" electrical connection for safety
  • Duplicates ER•3A smooth frequency response
  • Provides 30+ dB external noise exclusion – equivalent to a single-wall booth when used with deeply-sealed foam eartips
  • Provides 70+ dB isolation (interaural attenuation) between ears; reduces the need for masking
  • Reduces test/retest variability compared to supra-aural earphones
  • Eliminates test errors due to collapsed ear canals
  • Simplifies RECD (Real-Ear-to-Coupler-Difference) measurements
  • May be calibrated in a 2-cc coupler, occluded ear simulator, or 0.4-cc coupler

Package Includes

  • ER•3C earphones 10 Ohm
  • 7′ cable with dual-mono 6.33 mm (1/4″”) plugs
  • 20 foam eartips (regular, 13 mm)
  • 20 foam eartips (small, 10 mm)
  • 2 foam eartips (large, 18 mm)
  • Hook-and-loop neck strap

Technical Specifications

  • Impedance: 500 Ohms
  • Sensitivity: 102.5 dB SPL in HA-2 coupler at 0.49 Vms
  • Temperature: 15-35 °C
  • Relative Humidity: 30-90% (non-condensing)
  • Ambient Pressure: 98-104 kPa
  • Maximum Output: Meets or exceeds 110 dB HL at standard audiometric frequencies between 0.5 and 4kHz
  • Safe Operating Limits: Maximum continuous sine wave drive: 13.75 Vrms

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