EH-27479-000

Speakers Overview

The Knowles EH-27479-000 is a balanced armature speaker featuring a rectangular form factor. It operates with an impedance of 144 Ohms and delivers a sound pressure level of 100 dB. The component is designed for audio applications requiring compact magnetic transducers. Key specifications include a frequency range spanning from 200 Hz to 8 kHz, ensuring adequate coverage for voice reproduction tasks.

Speakers Feature Summary

• Utilizes a balanced armature mechanism for efficient acoustic output
• Features a side port design for optimized sound projection
• Constructed with non-magnetic materials suitable for sensitive environments

Speakers Applications

• Hearing aid audio output
• Medical device speakers
• Wearable electronics audio components

Speakers Procurement Notes

Verify the specific impedance and sensitivity ratings against the official datasheet, as variations exist within the EH series. Confirm the port orientation (side vs. top) matches the mechanical layout requirements. Ensure compliance with RoHS standards if required by the target assembly. Cross-reference the exact part number suffix to guarantee correct acoustic performance characteristics.

Speakers Selection Notes

Select this component when a low-profile balanced armature solution is needed for voice-band applications. Consider the 144 Ohm impedance for matching driver circuits. Evaluate the 100 dB sensitivity against power constraints. The rectangular shape aids in fitting tight enclosures compared to circular alternatives.

Speakers Part Context

This part belongs to the Knowles EH series of balanced armature speakers. These components are widely used in hearing aids and medical devices due to their small size and high efficiency. The series offers various impedance and sensitivity options tailored for different audio processing needs.

Speakers Replacement Considerations

Check for direct substitutes within the EH series that match the 144 Ohm impedance and 100 dB sensitivity. Verify mechanical footprint compatibility before swapping. Ensure the replacement maintains the same side-port configuration for acoustic alignment.