Voice amplifier wireless microphone products require careful consideration of how to capture and amplify human speech clearly. Manufacturers and brand owners need a microphone element that consistently reproduces natural voice while minimizing unwanted noise, feedback, or uneven amplification. In real-world scenarios such as portable PA systems, classroom amplifiers, tour guide devices, or fitness instruction, the microphone must perform reliably in varying environments while preserving clean and natural voice signals.
Matching Microphone Elements to Product Needs
Choosing the right microphone element directly impacts the performance of the final product. An unsuitable element may pick up excessive ambient noise, introduce feedback, or reduce vocal clarity. For wireless voice amplification, moderate sensitivity, unidirectional pickup, and interference resistance are critical. These features ensure the speaker’s voice remains distinct and clear, even when used near portable amplifier speakers or other electronic devices.
ECM-F9750UL-51: Practical and Reliable Solution
The ECM-F9750UL-51 is a unidirectional electret condenser microphone element specifically designed for voice amplifier wireless microphone applications. While not a high-end flagship model, it fits typical portable voice amplification scenarios perfectly. Its combination of unidirectional pickup, moderate sensitivity, and compact size allows manufacturers to integrate it reliably into lapel microphones, headset systems, or portable amplification devices.
Specifications Overview
| Parameter | Specification |
|---|---|
| Model | ECM-F9750UL-51 |
| Dimensions | 9.7 × 5 mm |
| Directivity | Unidirectional |
| Sensitivity | -51dB ± 2 |
| Impedance | 680Ω |
| S/N Ratio | 58dB |
| Max SPL | 110dB |
| Operating Voltage | 1.5Vdc |
| Frequency Response | 100Hz ~ 12kHz |
Frequency Response and Voice Clarity
In the low-frequency range of 100Hz to 1kHz, the ECM-F9750UL-51 delivers strong presence, which enhances vocal power and durability. Moving into the 1kHz to 5kHz midrange, the response remains stable to ensure clear and natural speech while minimizing the risk of feedback. Above 5kHz, the smooth roll-off helps reduce high-frequency noise, resulting in overall cleaner and more natural sound output.
Key Technical Features
The ECM-F9750UL-51 combines several practical features for wireless voice amplification. Its unidirectional pickup focuses on the speaker’s voice while reducing ambient noise, and the moderate sensitivity (-51dB ±2) ensures a clear balance between feedback prevention and voice clarity. With a high signal-to-noise ratio of 58dB, the microphone provides clean and low-noise amplification. The compact size (9.7 × 5 mm) makes it suitable for integration into lapel or headset devices, while its interference resistance supports stable performance in wireless environments.
Integration Flexibility for Manufacturers
The ECM-F9750UL-51 is engineered to integrate seamlessly into voice amplifier wireless microphone products. Manufacturers can select from our existing microphone element models or request custom solutions tailored for specific frequency responses, sensitivities, or physical dimensions. This flexibility allows efficient integration into lapel, headset, or portable PA devices without compromising voice quality.
For manufacturers and brand owners designing voice amplifier wireless microphone products, ECM-F9750UL-51 provides a reliable and practical microphone element. Its unidirectional pickup, controlled sensitivity, stable frequency response, and interference resistance make it suitable for a variety of portable amplification scenarios. With multiple existing models and the ability to support custom R&D, we help manufacturers efficiently bring voice amplification products to market. Learn more about our voice amplifier microphone capsule for wireless applications.
