Post vacuum impregnation: each Duelund CAST capacitor winding with paper dielectricum is carefully wax/oil impregnated under deep vacuum to ensure every microscopic void is eliminated and the winding is fully saturated.
This process minimizes mechanical resonances, stabilizes the dielectric, and ensures long-term reliability. The result is a capacitor that remains stable under dynamic signal conditions while preserving the natural tone and microdetail that Duelund is known for.
