E170/330/300 | 3,3 mH | 0,20 Ω | 3% | 9 AWG | Choke Coil

The Intertechnik Air-core inductor, model E170, is a premium-grade component designed for audiophiles and loudspeaker builders who demand uncompromising signal purity. With an inductance of 3.30 mH and a DC resistance of just 0.20 Ω, this inductor ensures minimal power loss and exceptional transient response, making it an ideal choice for high-fidelity crossover networks.

This air-core inductor excels in passive crossover designs for bookshelf speakers, floor-standing towers, and studio monitors, where precise frequency division is critical. Its low resistance and air-core construction eliminate core saturation and hysteresis distortion, preserving the natural character of your audio signal. Whether you are upgrading an existing system or building a custom speaker from scratch, this component delivers reliable, consistent performance.

Technically, the inductor features a 3.00 mm copper wire wound on a non-magnetic former, resulting in a stable inductance value with a tolerance of ±3.0%. The compact dimensions—48 x 46 mm or 49 x 37 mm depending on orientation—allow for flexible placement within enclosures. The air-core design ensures zero core losses, while the robust winding maintains structural integrity under dynamic loads.

For discerning listeners and engineers alike, the Intertechnik E170 air-core inductor offers a perfect balance of low resistance, high linearity, and precise inductance, ensuring your speaker designs achieve their full sonic potential.