ER•3C Insert Earphones – 10 Ohm

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ER•3C Insert Earphones – 10 Ohm. ER•3C™ 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. 10 Ohm or 50 Ohm model available.

Advantages of ER•3C earphones:
– 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

System Includes:
– ER•3C earphones (10 Ohm or 50 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

Additional information

Weight 1.00 lbs
Dimensions 2 × 11 × 13 in
Charges Status Bond