Sample Receiver (Speaker) used in Hearing Aids

Hearing aid Receiver Dimensions: 6.32mm x 4.31mm x 2.97mm (.249in x .170in x .117in)	Relative size of our Melody A1 open fit hearing aid Length: 2.8 cm. or 1 1 /8" Height: 1 cm. or 7/16" Width: 6 mm. or 1/4"

The following information is provided by Knowles Electronics
 

Knowles KA & KE Receivers (picture shown above)

Knowles' most versatile and most popular receiver, the ED series powers applications ranging from Standard BTE aids and Mini-BTE aids to Full Concha and Half Concha ITE instruments. The ED is made even more functional by the addition of ferrofluid. Its shock survivability makes it a robust receiver for many applications. FED receivers also damp acoustic peaks and reduce vibration to solve feedback problems and closing issues in ITE hearing instruments.

Features

• Compact size - 0.081cc
• Appreciable output power - 112dB nominal, 129dB maximum
• Two-terminal zero-bias and three-terminal center-tapped configurations
• Undamped, screen damped, internally damped, and FerrofluidTM damped responses with 2dB, 4dB, or 6dB peak amplitude
• Numerous port locations
• Wide range of coil impedances
• Available with FerrofluidTM technology for screenless damping and improved shock performance