Dayton Audio AC201-4 | 1.4 mH | 0.89 Ω | 5% | 20 AWG

The Dayton Audio AC201-4 air core inductor is a precision component engineered for high-fidelity loudspeaker crossover networks. Its 1.4 mH inductance and low 0.89 Ω DC resistance ensure accurate frequency division while minimising signal degradation, making it an ideal choice for audiophiles and DIY speaker builders seeking transparent, distortion-free sound reproduction.

This inductor excels in passive crossover designs for two-way and three-way speaker systems, where it helps separate bass, midrange, and treble frequencies with exceptional clarity. It is particularly suited for high-end home audio projects, studio monitors, and custom loudspeaker builds where component quality directly impacts sonic performance. The air core construction eliminates core saturation and hysteresis distortion, preserving the integrity of even the most delicate musical passages.

Technically, the coil is wound with 20 AWG wire to a tolerance of ±5%, ensuring consistent performance across production batches. Its compact dimensions of 44 x 15.8 mm allow for easy integration into crowded crossover boards, while the 2 W RMS power handling accommodates moderate signal levels without overheating. The air core design also avoids the non-linearities associated with ferromagnetic cores, delivering a flat frequency response and stable inductance over a wide operating range.

For discerning listeners and engineers alike, the AC201-4 offers a reliable, high-quality solution for achieving precise crossover slopes and maintaining signal purity. Its robust construction and carefully specified electrical parameters make it a worthy addition to any serious loudspeaker project.