Magnet System & Voice Coil Design Program

The FINEMotor program is based on 36000 FEA simulations and is the ultimate tool for prediction of SPL & T/S parameters including BL(x) and Xmax with complete winding data. FINEMotor is the optimum simulation tool for designing the magnet system, voice coil and spider for woofers, domes, telephone-receivers, headphones etc. This includes Rectangular Micro Speakers and Voice Coils / Motors.

Precise and Fast
When SEAS was designing a new product line and used FINEMotor for the first time, the result was right on target and saved them a lot of time. After this first attempt SEAS now works with FINEMotor for all new motor systems.

You don’t need to know a lot about drivers to be able to use FINEMotor. This is a tool not only for engineers, but also for technicians.

Material database
With the latest version of FINEMotor you can add your own magnets and wires to the database, which already has a lot of standard Chinese materials to choose from.


Demo Video

Download FINEMotor Tutorial (2.0 Mb)

Special Features:

  • Accurate Prediction of SPL, T/S parameters and winding data.

  • Round and Edge Wound Copper, Aluminium and CCAW wires.

  • BL(x): BL product plotted as a function of the Voice Coil position in the air-gap. 

  • -Xmax and +Xmax given at 82% BL. 

  • In/Out Offset of Voice Coil now active with both built-in Pole configurations and imported flux profiles 

  • Pole piece Configuration: Extended pole / Undercut / Extended undercut, incremental using Mouse Wheel (See Demo Video)

  • Shielded Ferrite Motors and Inside (Neo) Motors with top (Shielding)

  • Inside (Neo-) Motors: Adjust Top Magnet diameter and thickness Calculated 

  • Ferrofluid Volume (uL), Saturation and Viscosity

  • Fs is calculated from Cone Fo and Spider deflection/resonance/flexibility.

  • Chinese Ferrite and Neodymium Magnetic Materials

  • Automatic magnetic compensation of air gap for multi-layer VC’s

FINEMotor Simulation Principle
Inside (Neo) Motor with adjustments
Pole Detail Adjustments
Ferrite Motor with Saturation
Neo Motor with Saturated Top Plate
Rectangular VC for Micro Speaker
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