ED-21992-000

Speakers Overview

The Knowles ED-21992-000 is a balanced armature receiver speaker designed for compact audio applications. It features a rectangular shape with top port location and solder pad termination style. The component operates within a frequency range of 200 Hz to 5 kHz and has an impedance of 760 Ohms. Physical dimensions are approximately 6.3 mm in length, 4.3 mm in width, and 3.0 mm in height. It delivers a sound pressure level of 104 dBA and efficiency of 107 dBA.

Speakers Feature Summary

• Balanced armature technology for high-fidelity audio reproduction
• Rectangular form factor suitable for space-constrained designs
• Top port configuration for directed sound output
• Solder pad termination for reliable board mounting

Speakers Applications

• Hearing aids
• Medical devices
• Smart home audio systems

Speakers Procurement Notes

Verify the specific impedance value (760 Ohms vs 420 Ohms) as conflicting data exists across sources. Confirm physical dimensions match your PCB footprint requirements. Ensure the manufacturer is Knowles and not a generic supplier. Request official datasheets to validate performance metrics before integration.

Speakers Selection Notes

Select this component when high sensitivity and compact size are critical. The balanced armature design offers superior clarity compared to dynamic drivers in small packages. Consider the 760 Ohm impedance for matching with specific amplifier outputs. Verify compatibility with existing enclosure acoustic designs due to the top port orientation.

Speakers Part Context

This part belongs to Knowles' line of precision audio receivers. Balanced armature speakers are commonly used in hearing aids and medical equipment where size and sound quality are paramount. The ED series typically focuses on miniaturization while maintaining acoustic performance standards required for professional audio applications.

Speakers Replacement Considerations

Check for direct substitutes from Knowles with similar impedance and dimensions. Verify that any replacement maintains the same balanced armature technology and top port configuration. Ensure acoustic performance metrics align with original design requirements.