Jantzen Audio 000-5103 | 4,1 mH | 0,37 Ω | 3% | 18 AWG

The Jantzen Audio 000-5103 iron core coil with discs is a high-quality component engineered for demanding loudspeaker crossover networks. Its precise 4.1 mH inductance and tight ±3% tolerance ensure accurate frequency filtering, making it an ideal choice for audiophiles and DIY speaker builders seeking consistent, reliable performance in both two-way and multi-way designs. This coil excels in low-frequency applications, where its iron core construction delivers superior inductance density and minimal magnetic saturation, allowing for clean, controlled bass response in passive crossover circuits.

Technically, the coil features an 18 AWG (1.02 mm diameter) copper winding, which offers a low DC resistance of just 0.37 Ω, reducing power loss and maintaining signal integrity. The iron core is paired with protective discs, resulting in compact dimensions of 45 x 46 mm that facilitate easy integration into tight enclosures. The ±3% tolerance guarantees that each unit performs to specification, critical for maintaining crossover point accuracy and phase coherence. Whether you are upgrading an existing speaker system or building from scratch, this Jantzen Audio coil provides the reliability and sonic transparency required for high-fidelity audio reproduction. Its robust construction and precise electrical characteristics make it a trusted component for serious audio projects.