Intertechnik HQ58/3.9/150 | 3,9 mH | 0,15 Ω | 5% | 15 AWG

The Intertechnik HQ58/3.9/150 is a premium iron core coil engineered to deliver precise, high-quality crossover filtering in loudspeaker designs. With an inductance of 3.9 mH and a tight ±5% tolerance, this component ensures accurate frequency division, making it an ideal choice for audiophiles and professional speaker builders seeking consistent, reliable performance in passive crossover networks.

This roller core coil is particularly well-suited for use in bass and midrange filter circuits, where its robust construction and low DC resistance of just 0.15 Ω minimise signal loss and power dissipation. The 15 AWG wire diameter (1.5 mm) further enhances current handling, allowing the coil to perform effectively in demanding, high-power audio systems without compromising sound quality.

Technically, the coil features a 58 mm outer diameter, a 28.8 mm core diameter, and a total height of 46.5 mm, with a winding width of 28 mm and a central hole of 4.8 mm for secure mounting. These specifications ensure easy integration into crossover boards while maintaining excellent magnetic stability. The iron core design provides high inductance in a compact form factor, reducing stray fields and improving overall filter accuracy.

In summary, the Intertechnik HQ58/3.9/150 offers a perfect balance of precision, low resistance, and robust build quality, making it a reliable choice for high-fidelity loudspeaker projects.