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The A(coustic) Team


IAR members have been the strong (yet typically invisible) team behind dozens of successful acoustic products over the decades. ​If you work with us, you'll find a group of engineers who add incredible value to your team while having honest and hard-working Midwest attitudes.

Larry Marcus
Transducers & Telecom
Co-Founder Emeritus
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15 years with MWM/Harman International designing acoustical transducers (microphones, loudspeakers and telephone receivers), as well as developing numerous patents and customer-focused applications.

26 years with Bell Telephone Laboratories as Distinguished Member of Technical Staff

M.S. Engineering Mechanics, Virginia Tech
​Curtis Gahimer
Loudspeaker Systems

8 years with MWM Acoustics/Harman International modeling and designing microspeakers and receivers.

Headphone design expert including over-ear, on-ear, insert, and in conjunction with Bluetooth/ANC/DSP audio algorithms.

Cell phone audio processing and testing


System testing and tuning, competitive benchmarking.


​B.S. Acoustic Engineering, Purdue University
​Marc Reese
​Simulation and MEMS​

Acoustic system modeling and microphone design using Acoustical Lumped Elements and COMSOL Multiphysics.


3 years with Harman International designing MEMS microphones, directional MEMS packages and integration of MEMS microphones for wearable Bluetooth devices and DSP.


2 years with the U.S. Naval Surface Warfare Center Crane- simulating sonar transducers and environmental testing


​M.S. Acoustics, Penn State University
Glenn Hess
General Manager

Measurements & Standards​​

Vice Chair of IEEE Working Group on Communications Devices


Contributor to multiple TIA Standards

15 years with MWM/Harman International managing acoustic lab, developing test capabilities, standards for acoustic devices ensuring compliance.


20 years with Bell Telephone Laboratories


Listen SoundCheck expert


A.S. Electronics, Vincennes University


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