High freqencey   Knowles ED-29689 
 
Westone UM2, Etymotic ER4P/B/S classic unit speaker
 
Size: 6.32mm*4.31mm*2.97mm
 
Type: Balanced Armature Driver
 
Sensitivity: 128db
 
Impedance: 7.1 Ohms
 
Shape: Rectangular
 
Endpoint Type: Wire Leads
 
 
Notice : Please wire touch unit contacts for test before install it. Replacements are not available once drivers been soldered. 

 

Over review---ED/FED series

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.  

ED-29689 high frequency driver

ED-29689