Larson Davis, a division of PCB Piezotronics

Acoustic Couplers & Ear Simulators

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Whether testing an earphone, hearing aid or audiometer, there is a Larson Davis coupler to satisfy your requirements. Due to the rugged, stainless steel construction and product quality you can rely on your Larson Davis coupler or ear simulator to work dependably for many years.

  • Audiometer Calibration
  • Production Testing
  • Hearing Aid Test
  • R & D

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AEC100 NBS 9A 6 cc Coupler for 1 inch microphone
A rugged artificial ear for testing supra-aural earphones
The AEC100 Coupler is a precision acoustic coupler designed primarily for the calibration and test of supra-aural earphones used in audiometry. It allows accurate and repeatable measurements within its frequency response (up to 8 kHz). It may also be used for production testing where correlation between the coupler and real ear response is not a requisite.

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AEC201-A IEC 60318-1 Ear Simulator
A new Ear Simulator for testing a variety of earphones using the latest standards
AEC201-A is a new ear simulator designed to be used with both supra-aural and circumaural earphone at frequencies up to 16000 Hz. Its design meets the requirements of IEC 60318-1:2009 Edition 2 and ANSI S3.7 section 5.4 which make it compatible with earphones like TDH 39, TDH 49, TDH 50, HDA200 and Koss HV/1A. The AEC201-A is supplied with the 377A13 microphone and a Type 1 adapter plate. The optional AEC201-2 is a Type 2 adapter plate for testing earphones such as Koss HV/1A. Weights, accessories and the AEC201-A are all packaged in a durable weather-tight case.

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AMC493B Artificial Mastoid
Use this innovative transducer for bone vibrator testing
The AMC493B artificial mastoid is a precision mechanical coupler used to calibrate bone conduction hearing aids and audiometer bone vibrators.

The AMC493B is cost effective and simple to use. Its patented design converts the vibrator force output to an acoustic signal measured with the system’s sound level meter. It is used with the AEC100 coupler or AEC201-A Ear Simulator to perform bone vibrator tests.

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AEC202 2 cc Coupler for 1/2 inch microphone
Used for Insert Type Hearing Aids and Earphones
IEC60126, IEC60318-5, ANSI S3.7

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AEC203 2 cc Coupler for 1 inch microphone
Used for Insert Type Hearing Aids and Earphones
IEC60126, IEC60318-5, ANSI S3.7 2 cc

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AEC204 Occluded-Ear Simulator
For the measurement of earphones coupled to the ear by ear inserts
IEC60318-4, IEC60711:1981 (includes 1/2 inch 12.5mV/Pa matched microphone)

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