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MUNDORF FERON Zero OHM MCOIL N390 1,0-22mH
Zero Ohm Coils (BZO) are a special class of transformer core coils. For the manufacture of Mundorf coils with transformer core only FERON® is used a material that produces very little loss and less distortion. This material is a grain oriented siliceous iron with a thickness of 0.35 mm. This high quality initial material is subsequently subjected to a special heating process. In this way, the deformations of the crystalline structure caused during rolling are corrected. This is how Mundorf gets the FERON® to have a perfect crystal structure that provides excellent magnetic qualities. In Zero Ohm Coils, an air layer is calibrated and adjusted by hand between the two windings (one in ?? I and the other in ?? E ??). The air layer will determine the inductivity, which requires great care in the manufacturing process. It should not be too small, as the coil would become saturated with high loads. The high production costs of these coils and therefore their higher price is totally justified when looking for maximum fidelity in the impulse response with minimal power losses and control over the speakers impossible to get with any other coil on the market.