Live Broadcast Microphone Capsule 25mm
The ECM-B2573UL33-23221 is a 25 × 7.3 mm unidirectional microphone capsule primarily used in broadcasting microphones, live streaming, and professional recording microphones. With a sensitivity of -33dB±2 and a signal-to-noise ratio of 77dB, it provides clear and reliable sound capture for high-quality audio applications.
- Model: ECM-B2573UL33-23221
- Dimensions: 25 × 7.3 mm
- Directivity: Unidirectional
- Sensitivity: -33dB±2
- Impedance: 2.2KΩ
- S/N Ratio: 77dB
- Max SPL: 110dB
- Operating Voltage: 2Vdc
- Frequency Response: 50Hz~10KHz
Our 2573 unidirectional large-diaphragm electret condenser microphone head features a high signal-to-noise ratio and low noise. It offers high fidelity, strong directionality, and excellent anti-interference capabilities, ensuring superior audio quality and performance.
Standard Test Circuit
Typical Frequency Response
Appearance Dimension
Packaging Overview
Reliability Tests
- High Temperature Resistance: Operates normally in environments up to 80℃.
- Low Temperature Resistance: Operates normally in environments as low as -40℃.
- Humidity and Heat Resistance: Stable performance in environments with 55℃ and 85% relative humidity.
- Temperature Shock Resistance: Withstands rapid temperature changes from -40℃ to 80℃, tested over 10 cycles.
- Vibration Resistance: Passes multi-directional vibration tests to ensure stability during transport and use.
- Drop Resistance: Survives 5 drops from a height of 1 meter without packaging and continues to function normally.
- Storage and Operating Temperature Range: Suitable for extreme environments with a range of -35℃ to +65℃.
Sampling Process
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1Confirm customer requirements:Review product application, microphone capsule specifications, usage scenarios, and sound quality needs.
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2Recommend and specify:Provide recommended microphone capsule models and detailed specifications for customer evaluation.
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3Sample provision and testing:Deliver microphone samples for customer testing and feedback purposes.
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4Optimize and finalize:Refine microphone design based on feedback, finalize samples, and proceed to mass production upon quality approval.
Our Certificates
Our production meets ISO 9001:2015 and ISO 14001:2015 standards and is tailored for automotive applications under the IATF 16949:2016 standard, ensuring comprehensive quality management. Additionally, our products comply with ROHS, CE, and FCC requirements.
Quality Assurance
Conducting sampling inspections of incoming materials to ensure compliance with standard requirements.
Performing inspection audits to ensure the stability and control of the entire manufacturing process.
Conducting pre-shipment inspections to ensure that products meet established quality standards.
Acoustic Laboratory
Testing of background noise, sensitivity, frequency response curve, and directionality indicators.
Verification of the impact of different circuits, structural dimensions, materials, and processes on indicators.
Reliability testing at both the new product design stage and the mass production regular stage.
Automatic Workshop
Utilizing fully automated production lines to ensure high efficiency and consistency.
Equipped with state-of-the-art facilities, including a 10,000-level dust-free workshop.
Employing a rigorous 21-step process to guarantee product stability.
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