Intertechnik HQP56/12.0/85 | 12 mH | 1.2 Ω | 5% | 20 AWG | Mushroom Core Coil

The Intertechnik Ferrobar mushroom-shaped ferrite core coil delivers precise and stable inductance for high-quality audio crossover networks. Designed for demanding speaker builders, this 12 mH coil ensures accurate frequency filtering, helping to achieve a clean and balanced sound reproduction in both passive and active loudspeaker systems. Its robust construction makes it ideal for use in hi-fi, studio monitors, and custom audio projects where consistent performance is essential.

This coil features a ferrite core with a mushroom-shaped profile, which minimises magnetic leakage and provides reliable inductance stability over time. The 0.85 mm copper wire winding offers a low DC resistance of 1.20 Ω, reducing power loss and maintaining signal integrity. With an outer diameter of 56 mm, a central hole of 5 mm, and a total height of 35 mm, it fits neatly into compact crossover layouts. The ±5% tolerance ensures predictable behaviour in critical audio circuits, while the 1.2 mH inductance value is well-suited for midrange and tweeter filtering applications.

Engineered by Intertechnik, a trusted name in audio components, this coil combines durability with precision. Whether you are upgrading an existing design or building from scratch, the Ferrobar coil provides the reliability and sonic clarity that discerning listeners demand.