Dayton Audio LW18-40 | 0.40 mH | 0.29 Ω | 3% | 18 AWG

The Dayton Audio LW18-40 is a premium air core inductor coil engineered to deliver precise and reliable crossover performance in high-fidelity loudspeaker systems. As part of the renowned Perfect Layer series, this component is ideal for audiophiles and DIY speaker builders who demand accurate frequency filtering to achieve a clean, natural soundstage. Whether you are designing a new two-way bookshelf speaker or upgrading an existing crossover network, this inductor ensures minimal signal degradation and consistent results.

Constructed with 18 AWG wire and a 0.40 mH inductance value, the LW18-40 features a tight ±3% tolerance, guaranteeing that each coil performs exactly as specified. Its air core design eliminates core saturation and distortion, making it suitable for high-power applications where linearity is critical. The DC resistance is a low 0.29 Ω, which helps maintain efficiency and reduces power loss in the circuit. With compact dimensions of 41 x 16 mm, this coil integrates easily into tight enclosures without compromising performance. The robust winding technique and careful quality control from Dayton Audio ensure long-term stability and sonic transparency. For any serious speaker project requiring accurate crossover slopes and minimal coloration, the LW18-40 is a dependable choice that combines technical precision with practical usability.