Zero-Ohm Inductor

The zero-ohm inductor is the most rigorous Feron core design. It uses the E-core and I-core together – so this design places the most Feron in the magnetic circuit. It additionally has a defined air gap, which guarantees high power handling even in small designs. This combination is the key: maximum core effect with sufficient level reserves. The larger sizes are suitable not only for party use but also for PA applications.

Thanks to the maximum amount of Feron in the magnetic circuit, the zero-ohm inductor achieves extremely low ohmic resistances (RDC) at comparable inductance that are otherwise scarcely realizable. That is precisely its purpose: where the series resistance of the inductor would be the dominant limiting factor, the zero-ohm design reduces the resistance to a minimum. In applications with high currents this is a massive gain in efficiency and control – and it changes the behavior of the loudspeaker system directly, because the electrical damping of the amplifier takes maximum effect.

Like the E-core inductor, the zero-ohm inductor is typically fastened in the cabinet rather than mounted on the PCB. Size, weight and the importance of mechanical fixing clearly favor this. Moreover, this allows the field management and the arrangement relative to other components in the crossover to be designed rigorously.

Field of Application

Zero-ohm is the design for uncompromising applications in which the RDC must be as low as possible – combined with high inductance. Maximum magnetic circuit, minimum resistance.

Acoustic Properties

• Maximum bass control and dynamics thanks to extremely low series resistance
• Great composure at high currents
• Convincing in demanding low-frequency branches