Intertechnik HQ58/12/118 | 12 mH | 0,45 Ω | 5% | 17 AWG

The Intertechnik HQ58/12/118 roller core coil is a high-quality iron core inductor designed to deliver precise and reliable performance in audio crossover networks. With a substantial 12 mH inductance and a low DC resistance of just 0.45 Ω, this component is ideally suited for low-frequency filtering applications, particularly in bass and subwoofer sections of loudspeaker systems. Its robust construction ensures stable inductance values and minimal distortion, making it an excellent choice for audiophiles and professional loudspeaker builders seeking accurate sound reproduction.

This coil is especially valuable in passive crossover designs where maintaining signal integrity and controlling driver behaviour is critical. The roller core geometry reduces magnetic saturation and keeps distortion low, even at higher power levels. The 17 AWG wire diameter (1.12 mm) provides an optimal balance between current handling and winding efficiency, while the ±5% tolerance guarantees consistent performance across production batches. The outer diameter measures 58 mm, with a core diameter of 28.8 mm and a total height of 46.5 mm; the winding width is 28 mm, and the central bore is 4.8 mm, allowing for straightforward mounting. Whether you are upgrading an existing design or building a new crossover from scratch, this Intertechnik coil offers the reliability and sonic transparency required for high-fidelity audio systems.