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Knowles Balanced Armature

ST Subminiature spk groupKnowles balanced armature receivers are based on balanced armature technology and are utilized in a variety of high performance audio and communication products.

Knowles balanced armature receivers are available in several sizes and efficiencies, which can be finely tuned to meet your specific performance requirements.

There's no better way to improve your sound signature than with Knowles Balanced Armature Technology:

    • Enables high-fidelity, multi-way customized sound systems for earphones and earpieces
    • Delivers optimal performance in the smallest size – Knowles balanced armature receivers deliver the perfect balance between effi ciency and size, while achieving your performance needs
    • Eliminates ambient noise with passive isolation – snug, in-ear fi t keeps the music between your ears

Knowles balanced armature receivers are designed for use in in-ear applications, including earphones and communication earpieces, or be sub-assembled for premium consumer electronics accessories.

Knowles balanced armature technology platform uplifts the design and development of receivers for more advanced hearing aid solutions.

Precise, custom-crafted performance is facilitated by such proprietary design possibilities as :

    • Ferrofluid™ damping
    • Wide Bandwidth for high-frequency hearing loss
    • D-Amp™ internal power management
    • and Vibration Isolation for superior gain-beforefeedback.

Serie Picture BAX Receiver type Dimensions (mm) Comments
FK fk-dfk Standard ITC receiver 5.00 x 2.73 x 1.93 Smallest receiver
DFK fk-dfk Dual FK 5.00 X 2.73 X 3.86 Dual FK receiver package for increased SPL and reduced vibration output
WBFK wbfk Wideband FK 5.00 x 2.73 x 1.93 FK modified for enhanced high frequency output
TWFK twfk Tweeter / Woofer version 5.00 x 2.73 x 3.86 For high fidelity - wide acoustic band
FH FH Standard ITC receiver 5.09 x 2.80 x 2.59
HC HC High output version 5.16 x 3.51 x 3.00
WBHC WBHC Wideband HC 5.16 x 3.51 x 3.00
EH EH Standard ITE receiver 5.19 x 3.55 x 3.00 EH is 2/3 around the size of ED speakers
ES ES EH size receiver with integrated Class D power amplifier 5.18 x 3.54 x 3.04
GQ GQ Two-Way receiver 6.30 x 4.29 x 4.92
ED ED Standard ITE receiver 6.32 x 4.31 x 2.97 Available vented and popular series for earphone designs
FED FED ED receiver with Ferrofluid™ damping 6.32 x 4.31 x 2.47
EP EP ED size receiver with integrated Class D power amplifier 6.32 x 4.29 x 2.99
SR SR Round ITE receiver using balanced armature technology and larger diaphragm Ø6.40 x 4.00
EC ec Standard ITE receiver with rounded front corners 7.57 x 4.31 x 3.67
TEC TEC Standard BTE receiver 7.87 x 4.09 x 2.79 TEC receiver is half the thickness of BK or EF
DTEC DTEC Dual TEC 7.87 x 4.09 x 5.59 Dual TEC receiver package for increased SPL and reduced vibration output
BK BK Standard BTE/ITE receiver 7.87 x 5.59 x 4.01 Popular "value" series for earphone designs
CI CI Standard BTE/ITE receiver 9.47 x 7.18 x 4.10 Most powerful standard receiver
CM CM Non-contact headset receiver Ø16.64 x 8.38 Resists electro-static discharge to commercial aviation standards
MR MR Waterproof/submersible receiver Ø22.12 x 9.3 For use in handsets intended for use directly against the ear
CB CB Receiver / microphone for
radio handset applications
25.15 x 25.15 x 9.65 Available in a waterproof version

ITE means In-The-Ear
ITC means In-The-Canal
BTE means Behind-The-Ear

To best choose a balanced armature receiver dedicated to your application, please do not hesitate to contact us. Our team will be pleased to support you.


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