Jantzen Audio 000-5478 | 3,9 mH | 0,36 Ω | 3% | 18 AWG

The Jantzen Audio 000-5478 iron core coil with discs is a meticulously engineered component designed to elevate the performance of high-fidelity loudspeaker systems. This 3.9 mH inductor is an ideal choice for audiophiles and DIY enthusiasts seeking precise crossover filtering, ensuring that each driver in a multi-way speaker receives only the intended frequency range. Its robust construction makes it particularly suitable for bass and midrange applications, where accurate signal management is critical for achieving a natural, uncoloured soundstage.

Technically, this coil features a 3.9 millihenry inductance with a tight ±3% tolerance, guaranteeing consistent and reliable performance across production batches. The 18 AWG (1.02 mm diameter) copper wire offers a low DC resistance of just 0.36 Ω, minimising power loss and maintaining signal integrity even in demanding designs. The iron core, complemented by protective discs, enhances magnetic efficiency while reducing the physical footprint compared to air-core alternatives. With compact dimensions of 35 x 45 mm, it integrates seamlessly into crossover networks without compromising on sonic accuracy. Whether you are upgrading an existing system or building from scratch, this Jantzen Audio coil delivers the precision and durability required for exceptional sound reproduction.