Intertechnik HQP56/150/85 | 15 mH | 1.4 Ω | 5% | 20 AWG | Mushroom Core Coil

The Intertechnik Ferrobar mushroom-shaped ferrite core coil offers a refined solution for audiophiles and loudspeaker designers seeking to elevate crossover network performance. With its distinctive mushroom profile, this 15 mH inductor is engineered to minimise hum and electromagnetic interference, ensuring cleaner signal paths and more accurate frequency division in high-fidelity speaker systems. Ideal for use in passive crossover filters, it excels in applications where stable inductance and low losses are critical, such as in premium home audio, studio monitors, and custom loudspeaker builds.

Technically, the coil features a ferrite core that provides high permeability and consistent inductance, with a tolerance of ±5.0% for reliable performance. The winding uses 0.85 mm copper wire, resulting in a DC resistance of just 1.40 Ω, which helps maintain efficiency and reduce power loss. The outer diameter measures 56 mm, with a central hole of 5 mm and a recess diameter of 25.5 mm, while the core diameter is 28 mm. The total height is 35 mm, with a winding width of 23 mm, making it compact enough for integration into tight enclosures. This robust construction ensures long-term stability and minimal distortion, delivering clean, accurate sound reproduction across your audio system.