Intertechnik HQP56/3.3/18 | 3.3 mH | 0.36 Ω | 5% | 17 AWG | Mushroom Core Coil

The Intertechnik Ferrobar mushroom-shaped ferrite core coil delivers exceptional performance for demanding loudspeaker crossover networks. This 3.30 mH inductor is engineered to provide precise filtering, ensuring clean frequency separation and improved sound quality in your audio projects. Its robust construction makes it ideal for both DIY enthusiasts and professional speaker builders seeking reliable, long-lasting components.

This coil excels in high-fidelity crossover designs where accuracy and low signal loss are paramount. Whether you are upgrading existing speakers or building custom enclosures, the Ferrobar’s stable inductance and minimal resistance help maintain signal integrity, resulting in clearer highs and tighter bass response. It is particularly suited for midrange and woofer filtering applications where consistent performance is critical.

Technically, the coil features a 1.12 mm copper wire winding on a ferrite core with an outer diameter of 56 mm and a total height of 35 mm. The DC resistance is an impressively low 0.36 Ω, reducing power loss and heat generation. With a tolerance of ±5.0%, it ensures repeatable results across production batches. The central mounting hole of 5 mm and recess diameter of 25.5 mm simplify integration into your crossover board.

In summary, the Intertechnik Ferrobar HQP56 coil combines precision engineering with practical design, making it a trusted choice for achieving accurate crossover filtering in high-quality speaker systems.