Moretec

Moretec Audio Ferrofluid

Moretec Audio Ferrofluid is a high-quality magnetic liquid used in the voice coil gap of loudspeakers to significantly enhance performance and reliability. It improves power handling, smooths frequency response, and stabilizes voice coil positioning by providing thermal conductivity, damping, and centering within the magnetic field.

 

We offer a variety of formulations with tailored magnetization and viscosity, suitable for tweeters, woofers, buzzers, and other speaker types. Our ferrofluids are widely used in consumer electronics, automotive audio systems, and professional sound equipment.

 

Types of Moretec Audio Ferrofluid

Standard Audio Ferrofluid Model

Premium magnetic fluid for audio devices, ensuring smooth operation, enhanced sound clarity, and durability in high-performance speakers and transducers. Reliable, cost-effective, and industry-proven.

 

Custom Audio Ferrofluid Model

Tailored ferrofluid solutions for unique audio applications, optimized for specific frequency, temperature, and performance requirements. Precision-engineered for superior acoustics and longevity.

 

Why Use Audio Ferrofluid in Loudspeakers?

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Thermal Conductivity – Higher Power Handling

Audio ferrofluid's thermal conductivity is 6x higher than air.

 

Enables the speaker to withstand over twice the input power.

 

Reduces thermal resistance rise, prevents dB drop, and extends lifespan.

 

Damping – Smoother Frequency Response

The audio ferrofluid's viscosity provides damping, reducing resonance peaks.

 

Improves Q factor and flattens the frequency response for better audio quality.

 

Centering – Lower Distortion

Viscous ferrofluid stabilizes the voice coil, keeping it centered.

 

Minimizes friction, prevents coil damage, and reduces dynamic and harmonic distortion.

 

Advantages of Moretec's Audio Ferrofluid

1. Excellent Thermal Conductivity and Power Handling

 

Moretec's ferrofluid audio replaces air in the speaker voice coil gap, significantly improving thermal conductivity. This reduces voice coil temperature, enhances power handling, and minimizes power compression.

 

2. Outstanding Damping Effect for Smoother Frequency Response

 

The audio ferrofluid's viscosity provides mechanical damping to the moving system, smoothing resonance peaks and improving dynamic linearity, resulting in better sound quality.

 

3. Stable Voice Coil Positioning for Lower Distortion

 

The audio ferrofluid on a speaker forms a “liquid O-ring” in the magnetic gap, keeping the voice coil centered, reducing friction and misalignment, and lowering both dynamic and harmonic distortion.

 

4. Higher Manufacturing Yield and Cost Reduction

 

Moretec's audio ferrofluid can partially replace spider suspension systems and allows the use of smaller magnets and coils. This simplifies speaker design, increases production yield by 30–60%, and reduces material and manufacturing costs.

 

5. Multiple Models for Various Applications

 

Standard Models: Such as P‑110, P‑120, and P‑202, offering a range of saturation magnetization (110–325 Gauss) and viscosity (200 cP to 5000 cP), suitable for both consumer and professional audio systems.

 

Custom Models: Tailored for high-end or OEM applications, with parameters optimized for specific frequency characteristics, magnetic field strength, and viscosity.

 

What is Ferrofluid?

Ferrofluid is an high-quality magnetic liquid that exhibits unique physical properties under a magnetic field. It consists of:

 

Magnetic nanoparticles (~10 nm in diameter, 1/20th the size of cigarette smoke particles)

 

Surfactants (to prevent agglomeration)

 

Carrier liquid (such as hydrocarbon or ester-based oils)

 

These nanoparticles are uniformly dispersed in the carrier fluid to form a stable colloidal solution. Initially developed by NASA in 1965 for the Apollo program, ferrofluid is now widely used in vacuum seals, loudspeakers, magnetic imaging, and more.

 

Handling & Storage Guidelines for Moretec's Audio Ferrofluid

1. Storage

Store at room temperature and pressure. No refrigeration required.

 

Reseal immediately after use to avoid moisture or contamination.

 

2. Handling Notes

Do not shake before use to prevent bubble formation.

 

Ensure adhesive is completely cured and dry before injection.

 

Avoid leaving syringe in magnetic field during application.

 

Inject from a fixed point, evenly and in one step—no need for multiple points.

 

Do not replace standard viscosity ferrofluid with high-viscosity fluid, even in small amounts, as this may impair heat dissipation and shorten product lifespan.

 

Key Advantages of MTS Ferrofluid

1. Excellent Evaporation Performance (at 150°C)

Temperature

 

MTS Ferrofluid (g/s·cm²)

 

150°C

 

5.03×10⁻⁹

 

As speaker temperature usually remains below 150°C, lower evaporation directly extends service life.

 

2. Superior Temperature Stability

Temperature Shift (65→80°C)

 

MTS Viscosity Drop

 

<35%

 

Minimal viscosity drop ensures consistent damping and voice coil centering performance.

 

3. No Phase Separation

Magnetic Field Strength

 

MTS Separation Rate

 

12,500 Gauss

 

<0%

 

No solid-liquid separation, avoiding splash, ensuring long-term stability.

 

4. Excellent Adhesive Compatibility

Adhesive Type

 

MTS Reaction Rate

 

CR-type DC868K

 

0%

 

No reaction with commonly used centering adhesives, preventing gelation or detachment issues.

 

Technical Specifications & Model Selection of Moretec Audio Ferrofluid

1. Appearance & Physical Properties

 

2. Product Model Example

Example: P-2 10

P = MTS product code

 

2 = 200 Gauss saturation magnetization (2 × 100)

 

10 = 1000 cP viscosity (10 × 100)

 

3. Selection Guidelines

 

Note:

 

 Magnetic gap >9000 Gauss → choose 100G ferrofluid

 

Magnetic gap <9000 Gauss → choose 200G ferrofluid

 

High-sensitivity units → use lower viscosity ferrofluid

 

Normal units → higher viscosity is acceptable

 

How to Choose the Right Audio Ferrofluid for Your Speaker Design

1. Selection Guidelines

2.Based on Saturation Magnetization

3. Fluid Selection Examples
4. Influence of Ferrofluid on Damping
5. Moretec Magnetic Fluid Model Reference
6. Selection Guidelines

There is no universally fixed procedure for magnetic fluid selection. Choices can be made according to the magnetic flux density within the voice coil gap, the physical dimensions of the gap, and the system's frequency response characteristics.

 

 

2.Based on Saturation Magnetization

To mitigate ferrofluid splashing due to voice coil oscillation, careful consideration of the magnetic fluid’s saturation magnetization is essential.

 

 

3. Fluid Selection Examples

 

4. Influence of Ferrofluid on Damping

Due to the inherent viscosity of ferrofluids, mechanical damping is introduced into the acoustic system, altering the frequency response. Therefore, proper selection of viscosity is critical.

 

 

 

5. Moretec Magnetic Fluid Model Reference

 

FAQs about Moretec's Audio Ferrofluid

1

What is the chemical composition of ferrofluid?

Ferromagnetic fluid is composed of three main components: Magnetic nanoparticles, typically magnetite (Fe₃O₄ or γ-Fe₂O₃), Surfactants, which provide colloidal stability by preventing particle agglomeration, and Carrier liquid, such as synthetic hydrocarbons or esters, serving as the dispersion medium.

 

2

What are the functional effects of incorporating ferrofluid into a loudspeaker system?

Incorporating ferrofluid solution into the magnetic gap of a loudspeaker offers multiple technical benefits: Enhances thermal conductivity, improving power handling capability, Modifies and stabilizes the frequency response curve, Dampens unwanted resonances, thereby reducing harmonic distortion and preserving acoustic fidelity.

 

3

What is the maximum thermal tolerance of ferrofluid in speaker applications?

Ferrofluid used in electroacoustic systems can withstand temperatures up to 200°C, making it suitable for high-power or high-temperature applications.

 

4

What is the shelf life of ferrofluid under standard storage conditions?

Under room temperature and sealed storage conditions, the typical shelf life of ferrofluid is approximately 5 years, provided there is no exposure to moisture or oxidizing environments.

5

In which part of the loudspeaker is ferrofluid applied?

Ferrofluid is applied within the magnetic gap (also known as the voice coil gap) of the magnet circuit, surrounding the voice coil to facilitate both magnetic flux conduction and thermal management.

Moretec Ferrofluid Products

Ferrofluid Meaning

Moretec actively invests in production equipment and management software to produce high-quality advanced magnetic fluid for sale — including ferrofluid MSDS feedthroughs, audio ferrofluids, and mesh materials. All products manufactured by MoreTec feature cleanliness and long service life, achieved through advanced scientific manufacturing technologies such as thermal analysis, magnetic field analysis, and fluid analysis. This high-performance magnetic fluid for sale is widely applied in demanding fields such as semiconductor manufacturing equipment and the medical industry, where cleanliness and reliability are essential.

 

Types of Moretec Ferrofluid Design Products

Ferrofluid Feedthroughs are designed to create a hermetic seal in vacuum systems while allowing rotational or linear motion. Developed through advanced research in fluid dynamics and magnetic fields, they utilize a ferrofluid—a liquid containing magnetic nanoparticles—held in place by a magnetic field. This innovative design ensures minimal friction and wear, making them ideal for applications in semiconductor manufacturing, space technology, and scientific research, where maintaining a vacuum seal is critical.

 

Moretec Ferrofluidic Rotary Feedthroughs for Vacuum Systems

Ferrofluid Feedthroughs are designed to create a hermetic seal in vacuum systems while allowing rotational motion. Developed through advanced research in fluid dynamics and magnetic fields, they utilize a ferrofluid—a liquid containing magnetic nanoparticles—held in place by a magnetic field. This innovative design ensures minimal friction and wear, making them ideal for applications in semiconductor manufacturing, space technology, and scientific research, where maintaining a vacuum seal is critical.

 

Moretec Audio Ferrofluid

Moretec Audio Ferrofluid is a high-quality magnetic liquid used in the voice coil gap of loudspeakers to significantly enhance performance and reliability. It improves power handling, smooths frequency response, and stabilizes voice coil positioning by providing thermal conductivity, damping, and centering within the magnetic field.

 

As a ferrofluid manufacturer, we offer a variety of formulations with tailored magnetization and viscosity, suitable for tweeters, woofers, buzzers, and other speaker types. Our ferrofluids are widely used in consumer electronics, automotive audio systems, and professional sound equipment.

 

Moretec Mesh Products

Moretec offers a comprehensive range of metal mesh solutions, covering the full spectrum from continuous woven rolls to precision-engineered components. Our Mesh product line includes Woven Mesh Rolls, Mesh for Cryogenic Applications, and Spin Pack Filters in Metal Media, serving critical industries such as cryogenics, new energy, precision filtration, and advanced manufacturing.

 

With precise control over mesh count, wire diameter, material selection, structural integrity, and edge treatments, Moretec’s Mesh products are designed to perform reliably under demanding conditions. Combining high precision, durability, corrosion resistance, and customization flexibility, our Mesh series provides functional materials you can trust for high-performance and mission-critical applications.

 

Why Choose Moretec Magnetic Fluid: Proven Performance & Reliability

1. Advanced R&D Capability

MoreTec continuously drives innovation in magnetic ferrofluid technology, supported by in-house simulation tools for magnetic field distribution, thermal behavior, and fluid dynamics. These tools enable the development of products optimized for performance, durability, and application-specific demands.

 

2. High Reliability and Versatility

Our magnetic ferrofluids are engineered to meet the stringent requirements of various industries—from ultra-high vacuum seals to acoustic and thermal management systems. The magnetite ferrofluid for sale exhibits excellent stability, low volatility, and long service life under harsh environmental conditions.

 

3.Trusted Across Critical Industries

MoreTec's magnetic ferrofluid solutions are widely adopted in semiconductor manufacturing, vacuum systems, audio equipment, photonics, and other high-tech fields. Many of our ferrofluid for sale is integrated into critical systems by top-tier global manufacturers.

 

4. Multidisciplinary Technical Team

With expertise spanning materials science, mechanical engineering, electronics, and vacuum systems, our team provides full-cycle technical support—from product selection to application optimization and troubleshooting.

 

5. Stringent Quality Control

Each batch of ferrofluid and finished product undergoes comprehensive testing, including magnetic property analysis, purity verification, thermal and dynamic stability tests, and—in the case of sealing components—helium leak detection. This ensures consistency, reliability, and safety.

 

Moretec's Advanced Manufacturing Ability for Precision Magnetic Fluid

In-House R&D and Full Process Control

– Full control over design, ferrofluid formulation, heat treatment, machining, assembly, and testing.

 

– Pre-machining heat treatment reduces residual stress, improving dimensional accuracy.

 

Advanced Equipment Setup

– Main production equipment includes:

 

60+ CNC lathes

 

30+ machining centers

 

5 automated TIG welding machines

 

5 ultrasonic cleaners

 

vacuum grease-filling system

 

– equipped with high-precision systems sourced from Japan and Europe to ensure stability and precision.

 

Strict Dimensional and Surface Inspection

– Dimensional checks are conducted after each machining step. Nonconforming parts are eliminated.

 

– Surface inspections eliminate defects like burrs or scratches, ensuring tight component fit.

 

Dual Leak Detection System

– Every feedthrough is tested using both helium mass spectrometry and internal pressure leak tests, ensuring a helium leak rate below 1×10⁻11 Pa·m³/s.

 

– Our proprietary pressure leak system also supports extreme pressure differential testing.

 

Experienced Technical Team

– With around 100 employees, ~25% are technical professionals in design, materials, vacuum technology, and quality control.

 

– Capable of quickly addressing customer-specific or customized requirements.

 

Reliable Lead Time and Traceability

– Standard product delivery: 45–60 days.

 

– Each unit laser-marked、linked to production records, with full records of processing, assembly, inspection personnel, and timestamps.

 

Global Collaboration and Delivery Network

– MoreTec’s domestic and overseas entities work in synergy, ensuring a stable global supply and delivery system.

 

Custom Solutions Available

– We offer non-standard product design tailored to customer-specific shaft sizes, mounting methods, pressure/vacuum ratings, and cooling mechanisms.

 

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Technological Advantages of Mesh

Woven Mesh Roll – Precision Weave Series

Balanced Open Area Ratio: Achieves high flow throughput while maintaining structural integrity of the mesh body.

 

Structural Stability: Moretec's woven mesh roll exhibits superior deformation resistance; mesh apertures resist thread migration or distortion under external forces, ensuring long-term filtration precision.

 

Exceptional Surface Flatness: Promotes uniform fluid loading, effectively mitigating localized stress concentrations and delivering consistent permeability.

 

Spin Pack Filter – High Integrity Metal Media Series

Outstanding Mechanical Strength: Copper-clad edging withstands mechanical stresses during transportation, installation, and operational pressure/airflow impacts without deformation, providing foundational assurance for sustained sealing performance.

 

Superior Corrosion Resistance: Copper construction endows the spin pack filter with exceptional resistance to harsh operating environments, significantly extending service life.

 

Mesh Products – Automated Precision Series

Precision Mold Fabrication: Utilizes high-precision tooling to ensure burr-free, smooth mesh edges with superior lot-to-lot consistency.

 

High Customizability: Flexible processes enable efficient fulfillment of small-batch requirements across diverse dimensions and specifications.

Automated Scalable Production: Leverages fully automated facilities to achieve high-volume continuous manufacturing, ensuring delivery timeliness and quality stability.

Ferrofluid in speakers, a magnetic liquid integrated into the voice coil gap to efficiently dissipate heat generated during operation, thereby enhancing the power handling capacity and overall durability of the speaker system.

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