Baked Varnish Wire/ Resin Soaking

Baked varnish wire is enamel-insulated wire with an additional, activatable hot-melt outer layer, which has an adhesive effect when heated. The windings are thus fixed together.

Impact in practice

• The coil becomes mechanically stable and „works“ significantly less
• Micro-movements between windings are reduced
• In particular, this reduces macro-microphonic effects (the windings „work“ less) and increases “silence” during operation

Resin soaking as an alternative to baked varnish wire

If no baked lacquer wire is used, resin soaking carried out under vacuum can take over the mechanical fixing. The resin penetrates into the wrap, reduces cavities and degrees of freedom of movement and transforms the wrap into a stable compound. The result: significantly less macro microphones and an overall quieter, more precise operation of the coil.

Resin-Soaked Film Spools with Paper Insulator

Resin-soaked paper serves as an insulator in film coils and at the same time as a mechanical stabilizer of the wrapping package. As a result of the vacuum, the impregnating medium penetrates deeply, fills pores and cavities and combines the layers to form a compact composite.

This reduces macro microphony—i.e. the swirling of the wrap—to a minimum. The result is maximum silence, higher fine-tuning and superior dynamics, particularly in the bass and fundamental tone region.