Speaker Voice Coil Wire

Coil winding wire, known for its high insulation, conductivity, heat resistance, and smooth, pinhole-free surface, is widely used in various speaker coils. It effectively ensures the sound quality and durability of speakers.

Specifications for coil winding wire used in voice coils

Wire Diameter Range: 0.015-0.8mm

Shapes: Round wire, flat wire

Temperature Endurance Grades: 130 (Class B), 155 (Class F), 180 (Class H), 200 (Class C), 220 (Class N)

Insulation Layers: PE (Polyester), UE (Polyurethane), EI (Polyesterimide), AI (Polyamideimide), PI (Polyimide)

Film Thickness Grades: 1 grade, 2 grade, 3 grade

Colors: Brown, red, gold (all colors customizable)

Standards: GB/T 11021-2019, IEC 60317-2008, NEMA MW 1000, JIS C 3201

Certifications: Reach, UL, SGS, ROHS, ISO

Packaging: PT-2, PT-4, PT-10, PT-15 (customizable according to customer requirements)

Best-selling products of enameled wire for voice coils

Best-selling sizes of enameled wire for voice coils

0.45mm enameled wire

With a diameter of 0.45mm, this enameled wire is suitable for small speakers with lower power, such as computer speakers and mobile phone speakers. The fine diameter improves the winding accuracy, beneficial for high-frequency response. However, it has weaker heat resistance and resistance to mechanical stress, making it more susceptible to damage.

0.5mm enameled wire

With a diameter of 0.5mm, this enameled wire balances high-frequency response and durability. It also has higher power handling capacity, making it a versatile choice for various speaker applications.

0.63mm enameled wire

The 0.63mm enameled wire is suitable for larger high-power low-frequency speakers. It is more resistant to high temperatures and mechanical stress, making it less prone to damage.

However, its thicker diameter may not be suitable for precise winding in mid-to-high-frequency speaker applications.

Applications of enameled wire for voice coils

Home audio

Home audio speakers have high demands for sound quality, requiring the use of high-quality enameled wire. The insulation enamel is typically made of polyimide or polyurethane.

Car audio

Car audio speakers need to consider space limitations and high-temperature resistance. Therefore, enameled wires used in car audio systems often have smaller diameters, and the material is typically copper-clad aluminum wire, with insulation enamel made of polyimide.

Smartphones

Speakers in smartphones have small dimensions and high requirements for sensitivity and transient response. Therefore, enameled wires used in smartphones have smaller diameters, and the insulation enamel is usually made of polyimide.

Professional audio

Professional audio speakers have higher requirements for power and sound pressure. Consequently, enameled wires used in professional audio systems often have thicker diameters, and the insulation enamel is typically made of polyimide.

Advantages of enameled wire for voice coils

• High conductivity ensures smooth flow of current in the voice coil, reducing resistive losses.
• High temperature resistance allows it to withstand elevated temperatures, preventing the voice coil from overheating.
• The insulation layer prevents short circuits between coil turns, avoiding leakage and degradation of sound quality.
• Flexibility facilitates the winding of the voice coil and enhances its stability.
• Small size and lightweight properties effectively improve the sensitivity and transient response of the speaker, enhancing the performance of sound details.

Why Choose Signi?

• Precise Control: Uniform wire thickness ensures neat winding and stable performance.
• Fine Processing: Smooth, burr-free surface reduces friction, enhancing wear resistance.
• Stringent Testing: No pinholes after stretching, outstanding insulation performance for safety and reliability.
• Flexible Design: The coil winding is less prone to breakage, ensuring production efficiency and product quality.
• Free Samples: Signi provides free samples for you to personally experience the product quality.
• Meeting Needs: We have strong production capabilities to meet various customization requirements.
• Partnerships: Signi's partners include globally renowned speaker manufacturers such as Harman Kardon, JBL, BOSE, Dynaudio, Bowers & Wilkins, etc.

The difference between round and flat wire for voice coils

Round wire has advantages in terms of low cost, mature technology, and widespread application. However, it has relatively lower magnetic field utilization, efficiency, weight, and sensitivity.

On the other hand, flat wire offers advantages such as high magnetic field utilization, high efficiency, lightweight, strong tensile strength, and high sensitivity. However, it comes with higher costs and a more complex manufacturing process.

In pursuit of higher efficiency, sensitivity, and power, high-performance speakers often adopt flat wire, while round wire is more commonly used in regular speakers with lower cost and process requirements.