Intertechnik COT62/3.9/14 | 3.9 mH | 0.47 Ω | 5% | 15 AWG | Corotherm Coil

The Intertechnik Corotherm heat-resistant coil is a premium-grade iron core inductor engineered for demanding loudspeaker crossover applications. Designed to deliver consistent, stable performance even under high-power conditions, this 3.90 mH coil is an ideal choice for audiophiles and professional system builders seeking reliable frequency division in their designs.

This inductor excels in high-fidelity speaker systems where thermal stability is critical. It is particularly well-suited for use in bass and midrange crossover networks, where sustained power handling and minimal resistance drift are essential for maintaining sound quality. Whether you are constructing custom studio monitors, home theatre speakers, or high-output PA cabinets, the Corotherm coil ensures your crossover performs accurately over extended listening sessions.

Technical features include a copper winding diameter of 1.32 mm, which contributes to a low DC resistance of just 0.47 Ω, minimising signal loss and heat generation. The coil has an external diameter of 62 mm, a core diameter of 28 mm, and a total height of 41 mm, with a winding width of 35 mm. It also features a recess diameter of 25.5 mm and a central bore of 5 mm for secure mounting. Manufactured to a tolerance of ±5.0%, this inductor offers precise inductance values for critical crossover networks. The heat-resistant construction ensures long-term reliability, making it a robust choice for high-performance audio systems.