16mm Anti-Interference Electret Capsule for Karaoke

Anti-Interference Electret Capsule for Karaoke 16mm

The ECM-B1655UL45-541 is a 16 × 5.5 mm unidirectional microphone capsule ideal for products like karaoke microphones and live broadcasting microphones. With a sensitivity of -45dB±2 and a signal-to-noise ratio of 70dB, it ensures clear audio capture for singing and broadcasting applications.

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Minimum order quantities (MOQs) apply.
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🧪 Sample

Free (std. models) + shipping

🧭 Trial Order

From 200 pcs (1st order only)

📦 MOQ

5,000 pcs (mixed models allowed)

Model: ECM-B1655UL45-541
Dimensions: 16 × 5.5 mm
Directivity: Unidirectional
Sensitivity: -45dB±2
Impedance: 680Ω
S/N Ratio: 70dB
Max SPL: 115dB
Operating Voltage: 1.5Vdc
Frequency Response: 100Hz~10KHz

Tags: 16mm Electret 3-Pad Electret Vocal Mics

Technical Specifications

Our 1655 microphone head delivers deep bass, prominent vocals, bright highs, and a high signal-to-noise ratio and low noise. It also emulates dynamic microphone sound effects, ensuring a comprehensive audio experience.

Standard Test Circuit

ECM-B1655UL45-541 Test Circuit: 680Ω load, 1.5V supply, 1μF output capacitor

680Ω load resistor, 1.5V DC supply, 1μF output capacitor. Designed for three-terminal configuration.

Typical Frequency Response

ECM-B1655UL45-541 Frequency Response: 100Hz–10kHz with stable midrange and high-frequency roll-off

Working range from 100Hz to 10kHz. The response remains relatively flat from 800Hz to 4kHz, with a slight rise toward 5kHz and a gradual roll-off extending to 10kHz.

Dimensions (Unit: mm)

ECM-B1655UL45-541 Dimensions: Φ14×6.3mm with front dust mesh and rear acoustic port

Φ14×6.3mm cylindrical housing with front dustproof mesh and rear sound port. Three-terminal output design.

Packaging Overview

Standard packaging: 100 pcs per small box.
10 small boxes (1,000 pcs) are combined into one medium carton.
Several medium cartons are further packed into a large outer carton.
Pin-type microphones are protected with foam inside the small box.
Other types are packed directly or sealed in anti-static bags.

Reliability Tests

High Temperature Test: Microphone subjected to +80℃ for 100 hours, followed by 3 hours at room temperature.

Low Temperature Test: Microphone subjected to -40℃ for 100 hours, followed by 3 hours at room temperature.

Humidity & Heat Test: Microphone exposed to +55℃ and 85% relative humidity for 100 hours, followed by 3 hours at room temperature.

Thermal Shocking Test: Microphone subjected to [+80℃ 0.5H → room temp 1H → -40℃ 0.5H → room temp 1H] for 10 cycles, then exposed to room temperature for 3 hours.

Vibration Test: Microphone subjected to two hours of vibration in x, y, and z directions with frequencies of 10-55Hz and a 1.52mm amplitude.

Drop Test: Microphone dropped 5 times from a height of 1.0 meter onto a slippery marble floor, without packaging, and still performs normally.

Storage and Operating Temperature Range: Suitable for environments ranging from -35℃ to +60℃.

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.