Audio Ferrofluid Loudspeaker Retrofit Kits 900uL APG W05

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Audio Ferrofluid Loudspeaker Retrofit Kits 900uL APG-W05 - General Purpose for 4" Diameter V.C.

Ferrotec offers Audio Retrofit Kits for loudspeaker reconditioning and retrofitting.

These kits come with pre-measured packets of ferrofluid which are used to replace the old fluid in speaker air gaps when replacing diaphragm and coil assemblies. Many speaker manufacturers offer these kits with their diaphragm and coil replacement assemblies.

Ferrofluid improves the performance of high frequency and midrange drivers. It works by damping the impedance at resonance to effectively lower distortion, smooth frequency response, and increase thermal power handling.


  • Great for retrofit/replacement or new applications
  • Damps impedance at resonance
  • Reduces distortion
  • Conducts heat away from voice coil
  • Increases power handling capacity
  • Comes complete with cleaning strips and instructions
  • Sized to fit approximate voice coil diameters
More Information
Holding Force (kg) 0.0000
Surface Gauss (gauss) 0.0000
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