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Knowles balanced armature speakers - EH/ES Series

ehEH Series:

 EH Series speakers are approximately 2/3 the size of ED speakers and may be used for small radio communication earphones where ED size does not meet package requirements.

      • Balanced-armature, magnetic technology to give high efficiency, stability and reliability
      • High sensitivity
      • Various responses, including standard, damped and modified
      • Low distortion
      • Self-shielded for low magnetic radiation

esES Series:

 EH size speaker with integrated Class D power amplifier.

      • EH micro speaker, but with internal, highly-efficient, class D amplifier
      • Lower current drain prolongs battery life
      • Lower distortion
      • Available in a range of SPL ratings
 Model Picture Sensitivity @1kHz (dB SPL) Sensitivity @1st Peak (dB SPL) Max SPL @1st Peak (dB SPL) DC Resistance (Ω) Impedance @ 500 Hz (Ω)
EH-23030-000 EH-23030-000 100 117 126.5 395 625
EH-23149-000 EH-23149-000 100 116 126.5 68 101
EH-27479-000 EH-27479-000 100 112.5 123 118 144
ES-23127-000 ES-23127-000 101 107 117.5 N/A N/A
ES-23140-000 ES-23140-000 101 105.5 115.5 N/A N/A
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