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Hearing Instrument Balanced Armature Receivers
Tell us about your receiver or speaker design needs. Our collaborative expertise extends from industry-leading hearing instrumentation to high performance ear bud designs.
EF/FEF Series
The staple receiver for modern BTE hearing instruments, the EF series represents a precise balance of output power and compact size. Its length-width-height ratio provides an optimum fit that helps maximize BTE space and layout considerations while still providing superior acoustic output. A full range of Knowles' PantographTM, FerrofluidTM, and Vibration IsolationTM technologies help maximize the EF series use for any BTE instrument design. The FEF receiver brings the advantages of Ferrofluid damping, including reduced receiver vibration and improved shock survivability. These advantages are added to the EF receiver's precise balance of power and compact size. A full range of Knowles' PantographTM and Vibration IsolationTM technologies help maximize the FEF series optimum fit and superior acoustic output.
GR Series
Highest performance dual balanced armature receiver, maximizing output per cubic millimeter while minimizing vibration and magnetic radiation. Ideal for mid-high power custom, BTE, and receiver-in-canal hearing instruments.
MQM Series
The MQM is the smallest and most production friendly hearing instrument microphone offered. Utilizing Knowles MEMS technology, the MQM allows for efficient reflow soldering assembly. The MQM offers unmatched performance in reliability and environmental stability. The MQM also offers best in class vibration sensitivity performance. It is ideal for matched omni-directional pair applications as well as applications where the smallest possible size is required.
FG/BFG Series
The FG Series microphone is the world's smallest electret condenser microphone. Its cylindrical shape and compact size provide for superior fit rates. The FG can also be used in directional applications as a matched omni-directional pair. The BFG is an improved version of the FG microphone and offers enhanced PFA performance and power-on reset for instant settling time. Its electrical high pass filter enabling custom corner frequencies makes the BFG ideal for use in directional applications as a matched omni-directional pair.
EM/BEM Series
The EM is the most popular omni-directional microphone offered. The superior performance of the low noise EM makes it the choice of hearing instrument manufacturers for all hearing instrument sizes. The EM can also be used in directional applications as a matched omni-directional pair. The BEM is an improved version of the EM microphone. It offers enhanced PFA performance, as well as power-on reset and an electrical high pass filter. The BEM is ideal in directional applications as a matched omni-directional pair.
CI Series
Knowles' largest and most powerful receiver. With its high efficiency and a 143dB SPL maximum output, the CI receiver provides high acoustic power.
FC/FFC Series
The FC series receiver is an improved output and increased headroom version of the standard EH receiver. Moreover, the FC receiver features rounded corners, resulting in a smaller diagonal cross-section for improved fit rates.
FK Series
The world's smallest balanced-armature receiver, the FK series is designed for CIC applications where minimum size and maximum fit rate is needed. Only 0.025cc in total volume, the FK receiver can provide over 123dB SPL output for even the tightest fittings and deepest insertions. The wide bandwidth version pushes the boundaries of high-frequency performance. As part of the TWFK receiver, the WBFK offers the widest bandwidth response of any receiver.
