Intertechnik COT62/3.3/14 | 3.3 mH | 0.42 Ω | 5% | 15 AWG | Corotherm Coil

The Intertechnik Corotherm heat-resistant coil delivers exceptional stability and precision for demanding loudspeaker crossover networks. Engineered to maintain consistent performance even under high-power conditions, this iron core inductor is an ideal choice for audiophiles and professional system builders seeking reliable frequency filtering without thermal drift.

This 3.30 mH coil excels in high-fidelity audio applications, particularly in passive crossover designs for woofers and midrange drivers where accurate bass management is critical. Its robust construction makes it suitable for both home hi-fi installations and professional sound reinforcement systems that experience sustained high power levels. The Corotherm series is specifically developed to handle elevated temperatures, ensuring long-term stability in sealed enclosures or near heat-generating components.

Technically, the coil features a 1.32 mm copper wire diameter with a DC resistance of just 0.42 Ω, minimising power loss and preserving signal integrity. The 62 mm outer diameter and 28 mm core diameter accommodate a generous winding width of 35 mm, while the 5 mm central bore and 25.5 mm recessed diameter facilitate straightforward mounting. With a tolerance of ±5%, this inductor guarantees precise inductance matching for consistent crossover behaviour. The total height of 41 mm allows integration into compact designs without compromising performance.

For engineers and DIY enthusiasts who demand thermal resilience and accurate filtering, the Intertechnik Corotherm coil offers a dependable solution that maintains sonic clarity even under demanding operating conditions.