Intertechnik I78/270/085 | 2,7 mH | 0,41 Ω | 5% | 20 AWG

The Intertechnik Iron-Core Rod Coil with a nominal inductance of 2.70 mH is a high-quality component designed for demanding audio applications. This coil is particularly well-suited for use in passive crossover networks, where its stable inductance ensures accurate frequency division between drivers. With a DC resistance of just 0.41 Ω, it introduces minimal signal loss, making it an excellent choice for high-fidelity speaker systems where preserving audio clarity is paramount. The robust iron-core construction provides consistent performance, even under varying power levels, and the ±5.0% tolerance guarantees reliable and repeatable results in production or DIY builds.

This coil is ideal for both professional loudspeaker designers and dedicated hobbyists seeking to upgrade or repair existing crossover circuits. Its 0.85 mm copper wire diameter allows for efficient current handling, while the compact dimensions—28 mm outer diameter, 25 mm total height, and a 4.5 mm central hole—facilitate easy mounting on circuit boards or within enclosures. The low DCR contributes to improved damping factor and transient response, ensuring that your audio system delivers tight, controlled bass and clear midrange frequencies. Whether you are building a new set of speakers or fine-tuning an existing design, this Intertechnik rod coil offers the precision and reliability required for superior sound reproduction.