Intertechnik I78/330/085 | 3.3 mH | 0.45 Ω | 5% | 20 AWG | I-Point Coil

The Intertechnik Iron-Core Rod Coil, with a precise inductance of 3.30 mH and a low DC resistance of 0.45 Ω, is a high-quality component designed for demanding audio applications. This coil is ideal for use in passive crossover networks within loudspeaker systems, where accurate frequency filtering is essential for achieving a balanced and natural sound reproduction. It is particularly well-suited for bass and midrange drivers, where its iron core provides efficient energy storage and stable performance.

Technically, this coil features a 0.85 mm copper wire diameter, ensuring robust current handling and minimal signal loss. The external diameter measures 28 mm, with a central hole of 4.5 mm and a total height of 25 mm, making it compact enough for integration into most crossover boards. The ±5.0% tolerance guarantees consistent inductance values, which is critical for maintaining crossover accuracy across production batches. The iron core construction offers high inductance in a relatively small form factor, while the low DCR helps preserve amplifier damping factor and overall system efficiency. Whether you are building a new speaker design or upgrading an existing one, this Intertechnik coil delivers reliable, high-fidelity performance that meets the standards of discerning audio enthusiasts.