Intertechnik LU78/2.7/140 | 2,7 mH | 0,53 Ω | 3% | 15 AWG

The Intertechnik LU78/2.7/140 air core coil is a premium component designed for audiophiles and loudspeaker builders who demand uncompromising sound quality. This 2.7 mH inductor, with its low 0.53 Ω DC resistance and tight ±3% tolerance, ensures precise crossover filtering that preserves the integrity of your audio signal. Ideal for use in high-fidelity speaker systems, this coil excels in both two-way and three-way crossover networks, delivering clean, accurate frequency separation for tweeters, midrange drivers, and woofers. Its robust construction makes it suitable for DIY projects, professional repairs, or upgrading existing speaker designs.

Technically, this air core coil eliminates core saturation and hysteresis distortion, offering linear performance across a wide frequency range. The 15 AWG (1.4 mm) wire diameter ensures efficient current handling, while the 78 mm outer diameter and 25 mm core diameter provide a stable winding platform. The coil features a 22 mm recess diameter and a 5.3 mm central hole for secure mounting, with overall dimensions of 24 x 38 mm and a total height of 30 mm. The 25 mm winding width contributes to consistent inductance values. Whether you are crafting a bespoke crossover or restoring vintage speakers, this Intertechnik coil delivers the reliability and sonic transparency required for critical listening applications.