Driving: When arriving by car, approach from the east by heading west on Touhy, then turn right into the parking lot just east of the Shure building, which is on the corner of Touhy and Lehigh. DO NOT turn left into parking lot from Touhy heading east, as this is illegal and you may get a traffic ticket.
CTA Blue Line: Get off at Jefferson Park transit center, and take bus lines 85A, 225, or 226 to Shure (be sure to check the bus schedules for return trip).
CTA Red Line: Get off at Howard and take bus line 290 to Shure (be sure to check the bus schedules for return trip).
“Electrostatic Drivers for Earphones: Navigating the Potholes"
Electrostatic transducers are mechanically simple and can provide a number of performance benefits when used in acoustic applications. However, electrostatic transducers carry a stigma, are viewed as exotic, and have not found mainstream acceptance except in condenser/electret microphones. To most, the complication seems to stem from the unique electrical requirements, but a close look at the basic operation uncovers additional complications that can impede the performance benefits. To shrink the electrostatic transducer down to an earphone driver, with optimal performance, requires recognizing these “potholes” and finding the path to compromise.
ABOUT THE PRESENTER:
Roger Grinnip, Principal Acoustical Engineer at Shure Incorporated
Roger Grinnip is a Principle Engineer with Shure Incorporated. He’s been with Shure Incorporated for 17 years and worked exclusively on acoustical transducers, with his most recent designs ultimately becoming the KSM8 dynamic microphone and the KSE1500 electrostatic earphone. His interests include physical acoustics, structural acoustics, computational acoustics, (a little bit of) circuit design, and most other things related to electroacoustic systems.
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