Competitive Magnetics can manufacture an Audio Transformer with the specifications your company needs, with the fastest turnaround, at the most competitive price.

Audio transformers improve sound quality by removing interference from audio signals. This interference, or ground noise, is caused by voltages from other devices and produces a humming or buzzing sound. Typically, audio transformers are encased in a magnetic shielding which is filled with an epoxy resin that provides insulation, protects the windings, and prevents vibration of the core material. Some audio transformers do not have a center tap, while other devices have a center tap in only the primary side, only the secondary side, or in both the primary and secondary sides. For audio transformers, the impedance ratio equals the square-of-the-turn ratio.

Audio transformers vary according to output power, operating frequency range, and rated DC current. They also vary in terms of insertion loss, 3-decibel (dB) bandwidth, and direct current resistance. Insertion loss, the measured loss through a device excluding the power division factor, is the ratio of power output to power input. 3-dB bandwidth is the frequency range over which the insertion loss is less than 3 dB for mid-band insertion loss. Direct current resistance (DCR), the resistance of windings as measured in DC current, is often minimized in the design of audio transformers and specified as a maximum rating.

Competitive Magnetics manufactures electronic transformers and Current Transformers in a wide variety of shapes and sizes. This includes; various standard types of “core with bobbin” structures (E, EP, EFD, PQ, POT, U and others), toroids, and some custom designs. Our maximum weight and power limitations are 40 pounds of weight and 2 kilowatts of power. We have experience with foil windings, litz wire windings, and perfect layering. For toroids, special winding techniques such as sector winding, progressive winding, bank winding, and progressive bank winding can be accomplished to satisfy your dielectric, creepage distance, capacitance, and leakage inductance requirements.