Inventors:
Daniel Max Warren - Geneva IL, US
Thomas J. Jalava - Homer Glen IL, US
Brad Olson - Park Ridge IL, US
Michael J. Abry - Kildeer IL, US
Earl E. Houcek - Carol Stream IL, US
Mark F. Halla - Glen Ellyn IL, US
Charles B. King - Chicago IL, US
Assignee:
Knowles Electronics, LLC - Itasca IL
International Classification:
H04R 25/00
US Classification:
381328, 181129, 181130, 181135, 181137
Abstract:
A receiver is provided having a balanced armature motor mechanically interconnected to a displaceable diaphragm component. A front volume changes as the displaceable diaphragm component moves. The front volume is connected to a port. A rear volume changes oppositely to the front volume as the displaceable diaphragm moves. An acoustic channel connects to the port and is also connected to a sound outlet. The sound outlet allows acoustic energy to exit from the acoustic channel. A first acoustic pressure is generated in the front volume as the balanced armature motor moves the diaphragm. The acoustic channel and the internal volume are divided by a common wall section, wherein the common wall section is defined by at least one of the walls of the housing which also provides a portion of at least one wall for the acoustic channel.