Intertechnik HQR32/3.9/60 | 3,9 mH | 1,58 Ω | 5% | 23 AWG

The Intertechnik HQR32/3.9/60 is a high-quality 3.9 mH tube core coil designed for demanding loudspeaker crossover networks. This iron core inductor ensures accurate signal filtering, making it an essential component for audiophiles and DIY speaker builders seeking to refine their sound systems. Its robust construction and precise electrical characteristics deliver consistent, reliable performance in both passive crossover designs and custom audio projects.

This coil is ideally suited for use in bass and midrange crossover circuits, where its iron core provides high inductance values in a compact form factor. It excels in applications requiring low DC resistance and tight tolerance, such as high-fidelity home audio speakers, studio monitors, and automotive sound systems. Whether you are upgrading an existing design or building a new set of speakers from scratch, this component offers the stability and precision needed for clear, natural sound reproduction.

Technically, the HQR32/3.9/60 features an inductance of 3.9 mH with a tolerance of ±5%, ensuring consistent performance across production batches. It has a DC resistance of 1.58 Ω, minimising power loss and heat generation. The coil is wound with 23 AWG wire (0.6 mm diameter) on a 15 mm core, with an outer diameter of 32 mm and a total height of 26 mm. The winding width is 20 mm, and it includes a central hole of 5 mm and a recess diameter of 12 mm for easy mounting.

With its precise specifications and durable build, this Intertechnik coil is a reliable choice for achieving accurate crossover slopes and optimising your speaker system’s overall sound quality.