Dynamic Handheld Karaoke Microphone Cartridge 19.1mm

Suitable for conference microphone systems, classroom amplifier microphones, handheld microphones, and headworn microphones, this 19.1 × 10 mm unidirectional dynamic microphone capsule delivers clear voice pickup with a 100Hz–10kHz frequency response and selectable 200Ω or 250Ω impedance.

Model: ECM-DM1910K250
Dimensions: 19.1 × 10 mm
Weight: 3.7 g
Directivity: Unidirectional
Sensitivity: -58 dB ± 3
Impedance: 200 Ω, 250 Ω
S/N Ratio: 60 dB
Max SPL: 110 dB
Frequency Response: 100 Hz ~ 10 kHz

Request Information / Sample

Tell us your project stage. Our engineering team will respond accordingly.

Lead Time

Samples: 1–3 weeks
Mass production: 2–4 weeks

Customization

Application-based engineering support
Structure / sensitivity / acoustic tuning

MOQ

3,000 pcs
Per model / per production batch

Certification

RoHS & UL compliant
Industrial reliability assured

Technical Specifications

The ECM-DM1910K250 is a compact 19mm dynamic microphone capsule engineered for voice-driven applications such as conference microphone systems, classroom amplifier microphones, handheld microphones, and headworn microphones.

With a frequency response of 100Hz to 10kHz, it captures vocal range with clarity and warmth, while its unidirectional polar pattern reduces ambient noise. The selectable 200Ω and 250Ω impedance options provide flexible integration with various amplification systems.

Its small form factor fits handheld housings and slim-profile voice products, delivering stable and distortion-free performance in voice amplification and public speaking 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

The frequency response spans from 100Hz to 10kHz, delivering full-bodied lows, smooth mids, and a gentle roll-off in the highs.

Dimensions (UNIT: mm)

ECM-DM1910K250 Dimensions: Φ19.1×10mm

Standard Φ19.1×10mm speaker housing.

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.