The Open Fit coupler has an opening designed to fit the speaker unit of the Open Ear hearing aid. Just place the speaker unit into the coupler as you would place it into the patient’s ear. The hearing aid/coupler assembly is positioned in the sound chamber with the microphone of the hearing aid at the reference point of the chamber. Since FONIX analyzers use the “substitution method” with leveling instead of a second control microphone, you don’t have to worry about the hearing aid interfering with the measurement of the control microphone.
Open Fit Coupler $100.00
“Open Ear” hearing aids have exploded in popularity in the past couple of years. They have brought with them new testing concerns and a need for new testing methods. The traditional HA-1 and HA-2 couplers used for performing sound chamber measurements were designed for conventional hearing aids that fit snugly into the canal or that have attached earmolds. Open Ear hearing aids do not easily adapt to these couplers, and the resulting frequency response produces a curve that is nothing like the real-ear response of the hearing aid.
LEGAL
Bruce Waring
& Associates
Specialty Medical Instrumentation
PROUD MEMBER
Serving the Hearing Healthcare Industry since 1992
