Intertechnik Air-core Coil – 0.68 mH | LU25 | DCR 0.45 Ω | Cu 0.45 mm | ±5.0%

The Intertechnik Air-core Coil with a 0.68 mH inductance is a premium component designed for audiophiles and speaker builders who demand uncompromising sound quality. This coil ensures that your crossover networks operate with exceptional precision, delivering clean and accurate signal separation without the distortion or saturation often introduced by ferrite-core alternatives. Whether you are constructing high-fidelity home speakers, studio monitors, or custom audio projects, this coil provides the reliability and performance needed to achieve a natural, transparent soundstage.

Ideal for use in passive crossover designs, this air-core coil excels at filtering frequencies in two-way or three-way speaker systems, ensuring that each driver receives only the intended range. Its non-inductive core eliminates hysteresis and eddy current losses, making it particularly suitable for critical listening environments where clarity and detail are paramount. The coil’s robust construction also makes it a dependable choice for both DIY enthusiasts and professional engineers.

Technically, this coil offers an inductance of 0.68 mH with a tight tolerance of ±5%, ensuring consistent performance across production batches. The DC resistance is a low 0.45 Ω, minimising power loss and maintaining signal integrity. Wound with 0.45 mm copper wire, it balances efficiency with thermal stability, while the air-core design guarantees linear behaviour across a wide frequency range. This combination of features makes it an excellent choice for high-quality crossover networks.

In summary, the Intertechnik Air-core Coil delivers precise, distortion-free filtering for your speaker projects. Its careful construction and reliable specifications ensure that your audio system performs at its best, offering a noticeable improvement in sound clarity and detail.