Intertechnik Transformer Coil – 15 mH | FE130 | DCR 0.28 Ω | Cu 1.60 mm | ±5.0%

The Intertechnik Transformer Coil, with a nominal inductance of 15 mH, represents a high-quality component designed for discerning audio enthusiasts and professional loudspeaker builders. This precision-wound coil is an essential element for constructing accurate crossover networks, ensuring that each driver in a multi-way speaker system receives only the frequencies it is intended to handle. Its robust construction and tight tolerance make it a reliable choice for both new designs and upgrades to existing loudspeakers.

This coil is ideally suited for use in passive crossover filters, where it can be employed in low-pass, band-pass, or high-pass configurations depending on the specific requirements of the driver and enclosure. Whether you are building a pair of high-fidelity bookshelf speakers or a complex floor-standing system, the 15 mH value offers flexibility for shaping the frequency response. It is particularly useful for midrange and bass drivers where larger inductance values are often required to achieve the desired crossover point.

Technically, this coil features a direct current resistance (DCR) of only 0.28 Ω, which minimises power loss and ensures efficient signal transfer. The wire is wound with a 1.60 mm diameter copper conductor, providing excellent current handling and low resistive losses. The coil has an outer diameter of 13 mm and a recess diameter of 5.5 mm, facilitating straightforward mounting on a printed circuit board or within a crossover chassis. With a tolerance of ±5.0%, this component guarantees consistent performance, allowing for predictable and repeatable filter behaviour in your audio projects.

In summary, the Intertechnik 15 mH transformer coil is a precisely engineered component that delivers reliable, low-loss performance for high-quality loudspeaker crossover designs. Its combination of low DCR, substantial wire gauge, and tight tolerance makes it a worthy investment for any serious audio project.