Jantzen Audio 000-1243 | 0,40 mH | 0,167 Ω | 3% | 15 AWG

The Jantzen Audio 000-1243 air core coil is a premium component designed for audiophiles and loudspeaker builders who demand uncompromising sound quality. This 0.40 mH inductor ensures precise crossover filtering, delivering clear, natural audio reproduction with minimal signal degradation. Its air core construction eliminates core saturation and hysteresis distortion, making it an ideal choice for high-fidelity speaker systems where transparency and detail are paramount.

This coil is perfectly suited for use in passive crossover networks, particularly in two-way or three-way speaker designs where accurate frequency division is critical. It excels in applications requiring low-loss performance, such as studio monitors, home theatre systems, and bespoke DIY speaker projects. The ±3% tolerance guarantees consistent performance across production batches, ensuring reliable results in matched pairs or multi-way configurations.

Technically, the coil features a 0.40 mH inductance with a DC resistance of just 0.167 Ω, minimising power loss and heat generation. Wound with 15 AWG (1.45 mm diameter) wire, it offers excellent current handling and low eddy current losses. The compact dimensions of 57 x 15 mm allow for easy integration into tight enclosures, while the air core design ensures linear behaviour across the audio frequency range. This combination of low resistance, tight tolerance, and robust construction makes it a trusted choice for discerning audio enthusiasts.