Leading Edge Technology for Loudspeaker Crossover Networks
High-technology laminating makes it possible to manufacture inductors from high purity copper or silver foil wound onto a Lexan polycarbonate tube. Foil inductors are mounted by means of a single polycarbonate screw through the central bore, or a silicone elastomer, or a hot-melt adhesive.
Foil inductors have obvious advantages over wire-wound inductors in terms of improved electrical and sonic characteristics. This important new development has much to contribute to the design of state-of-the art loudspeaker crossover networks.
Since we introduced our Air Core Inductors in 1997 they have become standard fixtures in many of the worlds finest speakers, and thousand of audiophiles have improved their sound by personally upgrading their crossover circuits with our products.
Goertz developed the combination of high grade OFC copper with polypropylene film as the dielectric, wound onto a non-hygroscopic core able to endure the sometimes high working temperature without long term shrinkage. We knew that a loose center will allow relative motion of layers due to electromagnetic forces, leading to FM distortion, so we chose LEXAN™ a high strength, super stable engineering resin for our cores.
Research has no limits, so throughout the years we have worked on improving our product and proprietary manufacturing equipment. As a result we are now winding our inductors even tighter, to closer tolerances and at increased productivity. Inductors are calibrated within 2.5% of nominal, wound with superior tightness and fused at both ends, hermetically protecting the conductor (be it copper or fine silver) against tarnishing with time.
We have also increased the number of standard values.
Bridgeport Magnetics Group Inc., 6 Waterview Drive, Shelton, CT 06484. Phone: (203) 954-0050, (800) 836-5920. Fax (203) 954-0051. Sales@bridgeportmagnetics.com