Waterproof Microphone for Marine & Port Dispatch

DM-1910K waterproof dynamic microphone capsule for marine and port dispatch

DM-1910K microphone capsule dimensions and frequency response curve (100–10000 Hz)

ECMIC microphones 12,000 m² factory with 6M+ units monthly output and ISO/CE certifications

ECMIC microphones automated production line overview, showing assembly and quality control process

Durable waterproof dynamic microphone with stable mid-to-high frequency response. Ensures clear speech for marine and port dispatch systems in harsh 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-DM1910KP250
Dimensions: 19.1 × 10 mm
Weight: 3.7 g
Directivity: Unidirectional
Sensitivity: -58 dB ± 3
Impedance: 250 Ω
S/N Ratio: 60 dB
Max SPL: 110 dB
Frequency Response: 100 Hz ~ 10 kHz

Tags: 19mm Dynamic Intercom Mics

Technical Specifications

The ECM-DM1910K250 is a 19.1mm dynamic microphone capsule engineered for voice-driven applications, including marine and port dispatch communication, conference systems, and headworn microphones.

With a frequency response of 100Hz to 10kHz, it delivers clear and intelligible speech. Its unidirectional polar pattern minimizes ambient noise, while 250Ω impedance ensures compatibility with various audio systems.

The compact design fits handheld housings and slim-profile voice devices, providing stable, distortion-free performance in professional communication scenarios.

Exploded View & Parts List

ECM-DM1910K250 Exploded View: 8-component speaker assembly

Component breakdown: 1. Sponge 2. Cover 3. Diaphragm 4. Coil 5. Magnetic steel 6. Iron pots 7. Holder 8. PCB+Tin

Frequency Response Curve

ECM-DM1910K250 Frequency Response: 100Hz-5kHz rise, then attenuation to 20kHz

Frequency response spans 100Hz to 10kHz, providing balanced mids, smooth highs, and controlled lows, ensuring clear voice reproduction in marine and industrial environments.

Dimensions (UNIT: mm)

ECM-DM1910K250 Dimensions: Φ19.1×10mm

Dynamic microphone capsule with Φ19.1 × 10mm size, designed for reliable voice capture in professional and industrial communication applications.

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.