Intertechnik LU120/3.3/20 | 3,3 mH | 0,35 Ω | 3% | 12 AWG

The Intertechnik LU120/3.3/20 air core coil represents a premium choice for audiophiles and loudspeaker designers seeking uncompromising crossover performance. With a precise 3.3 mH inductance and an exceptionally low DC resistance of just 0.35 Ω, this coil ensures minimal signal loss and accurate frequency separation, preserving the integrity of your audio signal from amplifier to driver.

Ideal for use in high-fidelity speaker systems, this coil excels in both two-way and multi-way crossover networks, particularly where low-loss filtering is critical. It is well suited for midrange and woofer applications, delivering clean, transparent sound without the distortion or saturation that can plague iron-core alternatives. Whether you are building custom loudspeakers or upgrading existing designs, this component offers reliable, repeatable performance.

Technically, the coil is wound with 12 AWG wire on a 49.5 mm diameter former, with an outer diameter of 120 mm and a winding width of 47.5 mm. The total height is 55 mm, and the central bore measures 5.3 mm, with a recess diameter of 41.5 mm. A tight tolerance of ±3% ensures consistency across units, while the air core construction eliminates hysteresis and eddy current losses, maintaining linearity across the frequency range.

In summary, the Intertechnik LU120/3.3/20 air core coil delivers the precision and sonic transparency demanded by serious audio enthusiasts, making it an essential component for any high-quality crossover design.