14.2 x 2.8mm Replacement Speaker Driver for OWS

14.2 x 2.8mm Replacement Speaker Driver for OWS – RB-E14016G-003R

The RB-E14016G-003R is a high-performance round speaker driver designed for OWS (Open Wearable Stereo) wireless earphones, also known as air-conduction earbuds. With compact dimensions of Φ14.2×2.8mm and a net weight of 6g, this speaker delivers excellent sound quality in a minimal footprint. It utilizes a high-performance NdFeB magnet (Φ9×2T) and has an impedance of 16 ± 15% Ohm at 1000Hz with a rated power of 10mW and a max power handling capacity of 20mW.

PU + Wool Paper Composite Diaphragm Design

This speaker driver features a PU and wool paper composite diaphragm that enhances both durability and audio fidelity:

1. PU Diaphragm Characteristics:
   • Delivers transparent, clear sound with impressive bass response.
   • Made from 0.1mm Shore 90°A PU film for high durability and acoustic purity.
   • Lightweight and resilient, ensuring long-term performance.
2. Wool Paper Diaphragm Characteristics:
   • Soft texture enhances the natural and mellow expression of vocals.
   • Ideal for reproducing classical and soft music.
   • Noted for its immersive quality in orchestral playback.
3. Composite Benefits:
   • Combines the punchy bass of PU with the softness of wool paper.
   • Balanced frequency output across lows, mids, and highs.

Performance & Frequency Response

Operating at a resonance frequency of 180±20% Hz, the RB-E14016G-003R achieves an SPL of 91±3dB. It maintains consistent output across a frequency range of 20Hz to 20kHz, with less than 10% distortion. The driver is tested using a 0.6V sine wave from 50Hz to 5kHz and features forward diaphragm motion on positive DC input (marked by the red “+” terminal).

Environmental & Mechanical Testing

This speaker unit has passed stringent testing protocols to ensure long-term durability and reliable audio output under diverse conditions:

• Operating Temperature: -20°C to +55°C
• Storage Temperature: -25°C to +65°C
• Humidity Test: 96 hours at +40±2°C and 90–95% RH
• White Noise Test: 96 hours at 0.10W
• Vibration Test: 30 ±15 Hz at 1.5mm amplitude for 2 hours per axis
• Drop Test: 1-meter free fall onto concrete, 11 cycles
• Thermal Cycling: 5 cycles between 25°C and 65°C

Conclusion

The RB-E14016G-003R offers a premium blend of sound clarity, structural integrity, and environmental resilience. Its PU + wool paper diaphragm provides versatile tonal characteristics suitable for a wide range of audio playback scenarios. This makes it a reliable replacement or OEM option for open-ear OWS earphones looking to maintain high performance in a lightweight, air-conduction configuration.