Intertechnik LU78/2.2/140 | 2,2 mH | 0,46 Ω | 3% | 15 AWG

The Intertechnik LU78/2.2/140 air core coil is a premium component designed for discerning audio enthusiasts who demand uncompromising performance from their loudspeaker crossover networks. This 2.2 mH inductor delivers precise signal filtering without the distortion or saturation associated with ferrite or iron core alternatives, ensuring your high-fidelity designs maintain their sonic integrity across the entire frequency range.

Ideal for use in passive crossover circuits for bookshelf speakers, floor-standing towers, and studio monitors, this air core coil excels in applications where low-loss, linear performance is critical. It is particularly well-suited for midrange and woofer filtering, where its stable inductance value guarantees accurate crossover points and seamless driver integration. Audiophiles building or upgrading custom speaker systems will appreciate the consistency this component brings to complex multi-way designs.

Technically, the coil features a 2.2 mH inductance with a tight ±3% tolerance, ensuring reliable and repeatable performance. The 0.46 Ω DC resistance minimises power loss, while the 15 AWG wire diameter (1.4 mm) provides excellent current handling. With an outer diameter of 78 mm, a winding width of 25 mm, and a total height of 30 mm, this robust air core coil is designed for secure mounting in crossover boards. The 5.3 mm centre hole and 25 mm core diameter facilitate straightforward installation.

For your next high-fidelity speaker project, this Intertechnik air core coil offers the precision and sonic transparency required to achieve truly accurate crossover performance.