The Duelund Coherent Audio JDM-PIO-12-CU-0,33 is a 0.33 mH, 5% 12 AWG Wax PIO pure copper foil air-core inductor for high-quality loudspeaker crossover builds, using paper, wax and fully vacuum-impregnated WPIO construction for stable, low-distortion performance.
Highlights of the JDM-PIO-12-CU-0,33
- 0.33 mH JDM Wax PIO pure copper foil air-core inductor
- 12 AWG copper foil construction with 150 µm thick, 20 mm high foil
- Zero-plastic build using compressed paper, wax and oiled paper insulation
- Fully deep vacuum impregnated with proprietary WPIO dielectric
- Designed for loudspeaker crossovers, filters and audio electronics
Product details JDM-PIO-12-CU-0,33
Duelund Coherent Audio JDM-PIO-12-CU-0,33 0.33 mH 5% 12 AWG JDM Wax PIO Pure Copper Foil Air-Core Inductor
The JDM-PIO-12-CU-0,33 is part of Duelund Coherent Audio’s entry-level WAX/PIO air-core copper foil inductor range for loudspeaker crossover components. It is built around annealed pure copper foil rather than conventional wire, giving it the fast, clear and natural response that makes Duelund coils popular in demanding passive crossover projects.
Its construction is deliberately material-focused: zero plastic, a compressed paper former and waxed/oiled paper insulation between the copper foils. The foil itself is 150 µm thick and 20 mm high, corresponding to 12 AWG, and the integral foils are used as the terminals for a direct signal path.
Duelund fully deep vacuum impregnates these inductors instead of simply dipping them in wax. The proprietary WPIO dielectric requires several days of high-pressure impregnation, resulting in strong damping properties and high mechanical stability. This helps reduce microphony and supports consistent performance in audio crossover networks and filters.
The JDM series is the non-potted Duelund inductor option and uses the same wax, paper and foil design principles associated with the brand’s high-end audio components. It is a strong choice for builders upgrading passive networks in quality speakers where a low-loss, mechanically stable air-core inductor is required.
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