説明

• Notice: Please twine touch unit contacts for test before install it Replacements aren't accessible once drivers been soldered Specifications High frequency Knowles ED-29689 Westone UM2, Etymotic ER4P/B/S classic unit speaker Size: 6*4*2 Type: Balanced Armature Driver Sensitivity: 128db Impedance: 7 Ohms Shape: Rectangular Endpoint Type: Wire Leads Over review---ED/FED series Compact length - zero Appreciable output strength - 112dB nominal, 129dB maximum Two-terminal zero-bias and three-terminal center-tapped configurations Undamped, display damped, internally damped, and FerrofluidTM damped responses with 2dB, 4dB, or 6dB height amplitude Numerous port destinations Wide vary of coil impedances Available with FerrofluidTM expertise for screenless damping and improved shock performance Knowles&; maximum flexible and most well-liked receiver, the ED series powers applications starting from Standard BTE aids and Mini-BTE aids to Full Concha and Half Concha ITE instruments The ED is made even more useful by means of the addition of ferrofluid Its surprise survivability makes it a strong receiver for many purposes FED receivers additionally damp acoustic peaks and reduce vibration to solve feedback problems and shutting issues in ITE listening to instruments

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