Inside / Outside Voice Coils.

RCF has developed a unique voice coil, combining the advantages of inside/outside technology to the superior quality of polyimide-imide materials (wire resins and former resins).

The inside/outside coil offers many advantages:

• the dissipation surface is doubled
• the adhesion area to the former is doubled
• during thermal expansion the former is squeezed between inside and outside layers offering the best mechanical resistance.

Our former is made from polyimide-imide fibreglass and the area between the coil and the cone is a triple layer of nomex – fibreglass – nomex for maximum stiffness and accurate sound transfer.