14.5mm Unidirectional Dynamic Microphone Capsule

Unidirectional Dynamic Microphone Capsule 14.5mm

ECM-DM1458T200 microphone capsule dimensions and frequency response chart

Dynamic microphone element for two-way radio speaker systems, providing clear voice transmission in rugged environments.

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

Microphone element for aviation headset communication, delivering reliable voice clarity with noise rejection.

Compact 14.5mm unidirectional dynamic microphone capsule designed for aviation headsets, intercoms, two-way radio speaker microphones, and dynamic gooseneck intercom microphones—delivering clear voice pickup in noisy 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-DM1458T200
Dimensions: 14.5 × 7.5 mm
Directivity: Unidirectional
Sensitivity: -65dB±3
Impedance: 150Ω, 200Ω, 250Ω, 600Ω
Frequency Response: 100Hz~9000Hz

Tags: 15mm Dynamic Vocal Mics

Technical Specifications

The ECM-DM1458T200 features a unidirectional pickup pattern paired with a custom frequency response curve optimized for speech clarity between 100Hz and 9kHz. This combination enhances voice intelligibility while effectively reducing background noise, making it ideal for aviation headset microphones, intercom systems, and rugged communication devices.

With selectable impedance options from 150Ω to 600Ω, this compact 14.5 × 7.5 mm capsule easily integrates into diverse audio systems requiring reliable and consistent performance in harsh environments.

Exploded View & Parts List

ECM-DM1458T200 Exploded View: 8 key components including diaphragm, voice coil, and magnet assembly

Structural decomposition showing sponge, cover, diaphragm, coil, magnetic steel, iron pots, holder, and PCB assembly.

Frequency Response Curve

ECM-DM1458T200 Frequency Response: primarily focused within the 100Hz to 9kHz range

Frequency response primarily focused within the 100Hz to 9kHz range.

Dimensions (UNIT: mm)

ECM-DM1458T200 Dimensions: Φ14.5×7.5mm compact dynamic speaker

Compact Φ14.5×7.5mm housing design.

Packaging Overview

Packed in protective foam trays with individual compartments.
Each compartment holds around 4 microphone capsules.
Each capsule is sealed in a protective bag for dust and moisture resistance.
Each box typically contains approximately 2,000 microphone units.

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.