Dynamic Handheld Karaoke Microphone Insert 29mm

Optimized for handheld karaoke microphones and dynamic headworn microphones, this 29 × 23 mm unidirectional dynamic microphone capsule delivers warm, natural vocal reproduction comparable to the Shure SM58, with a frequency response of 50 Hz to 13 kHz and 600 Ω impedance—perfect for live streaming, KTV, and hands-free applications.

Model: ECM-DM52K600
Dimensions: 29 × 23 mm
Weight: 11.9 g
Directivity: Unidirectional
Sensitivity: -53 dB ± 3
Impedance: 600 Ω ± 15%
S/N Ratio: 75 dB
Frequency Response: 50 Hz ~ 13 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-DM52K600 is a compact dynamic microphone capsule designed for handheld vocal applications and headworn communication devices. With a wide frequency response of 50Hz–13kHz and 600Ω impedance, it reproduces vocals with warmth, clarity, and a smooth high-frequency roll-off—ideal for karaoke, streaming, public address systems, and hands-free headsets.

Its tonal quality is comparable to the renowned Shure SM58, delivering professional-grade vocal performance in a compact form.

Its unidirectional pickup pattern enhances voice isolation, reducing ambient noise in loud environments. This capsule’s acoustic profile makes it a versatile choice for manufacturers of live vocal mics, content creator gear, portable PA devices, and headset microphones.

Designed for easy integration into handheld housings or slim headset assemblies, the ECM-DM52K600 offers stable performance and robust sound capture for both professional and consumer-grade dynamic microphone assemblies.

Exploded View & Parts List

Dynamic Part

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

Frequency Response Curve

Response Curve

The frequency response spans from 50Hz to 13kHz, delivering rich lows, balanced mids, and a smooth high-frequency roll-off—ideal for clear and natural sound reproduction.

Dimensions (UNIT: mm)

Appearance Size

Compact size: 29mm diameter × 23mm height, ideal for various audio 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.