19mm Boom Dynamic Microphone Capsule

ECM-DM1912K250 microphone capsule size and frequency response

Flexible gooseneck dynamic microphone capsule designed for intercom systems in industrial and security applications.

Microphone element used in conference systems, delivering clear and precise audio for meetings.

Dynamic microphone capsule integrated into boom headsets, ideal for hands-free communication in sports and call centers.

Optimized for boom headsets, intercoms, and conference systems, this rugged 19mm unidirectional dynamic microphone capsule delivers clear, natural vocal pickup with a tailored 200Hz–7kHz frequency response for reliable performance in demanding environments.

🚫 Factory direct sales only – no retail.
Minimum order quantities (MOQs) apply.
For intercom & headset makers
📞 Contact us for orders & inquiries.

🧪 Sample

Free (std. models) + shipping

🧭 Trial Order

From 200 pcs (1st order only)

📦 MOQ

3,000 pcs (mixed models allowed)

Model: ECM-DM1912K250
Dimensions: 19.2 × 12 mm
Directivity: Unidirectional
Sensitivity: -59dB±3
Impedance: 250Ω±20%
Frequency Response: 200Hz~7000Hz

Tags: 19mm Dynamic Vocal Mics

Technical Specifications

The dynamic microphone capsule is engineered for clear and natural vocal reproduction, with a frequency response tailored from 200Hz to 7kHz to emphasize the critical speech range. Its 250Ω impedance ensures broad compatibility with a variety of audio systems.

Built to withstand demanding environments, this rugged 19mm capsule is ideal for integration into boom headsets, flexible gooseneck microphones, intercom systems, and conference audio equipment. It provides reliable and precise voice pickup, minimizing ambient noise while maintaining speech intelligibility.

Designed for professional and industrial applications, this microphone element offers consistent performance and durability, making it a preferred choice for manufacturers developing communication and public address solutions.

Exploded View & Parts List

Dynamic Part

Parts List: Sponge, Cover, Diaphragm, Coil, Magnetic Steel, Iron Pot, Holder, PCB + Tin.

Frequency Response Curve

Response Curve

Frequency Response: 200Hz–7kHz, optimized for clear vocal reproduction within the main speech frequency range.

Dimensions (UNIT: mm)

Appearance Size

Dimensions: Diameter: 19.2mm; Height: 12mm.

Reliability Tests

High Temperature Test: Microphone subjected to +60℃ ±3℃ for 96 hours with 20-50% humidity, followed by 6 hours of normal temperature lay.

Low Temperature Test: Microphone subjected to -25℃ ±3℃ for 96 hours with 20-50% humidity, followed by 6 hours of normal temperature lay.

Humidity Test: Microphone exposed to 40℃ and 90-95% relative humidity for 96 hours, followed by 6 hours of normal temperature lay.

Temperature Cycle Test: Microphone subjected to rapid temperature changes from normal temperature to +60℃ ±3℃ for 1 hour (normal temperature lay for 3 hours) and then to -25℃ ±3℃ for 1 hour (normal temperature lay for 3 hours).

Sensitivity Stability: Sensitivity remains within ±3dB of the initial sensitivity after each environmental test.

Sampling Process

Confirm customer requirements:

Review product application, microphone capsule specifications, usage scenarios, and sound quality needs.

Recommend and specify:

Provide recommended microphone capsule models and detailed specifications for customer evaluation.

Sample provision and testing:

Deliver microphone samples for customer testing and feedback purposes.

Optimize and finalize:

Refine microphone design based on feedback, finalize samples, and proceed to mass production upon quality approval.

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.