Output transformer (OPT) upgrade options for Elekit TU-8900
Output transformer (OPT) upgrade options for Elekit TU-8900
The quality of a tube amplifier’s OPTs is extremely important, especially so for single-ended amplifiers. Design is all important as an air gap in the transformer is needed to prevent transformer core saturation, which would cause audible distortion and other problems. Herein lies the challenge: having an air gap lowers the inductance, which compromises low-frequency response yet to increase the inductance requires adding more windings, which adversely affects the high-frequency response.
Sweden's Lundahl is a specialist designer and manufacturer of high performance transformers.
This upgrade for the Elekit TU-8900 kit replaces the standard kit OPT with specifically designed Lundahl output transformers (OPT) featuring amorphous cores rather than pure iron. An amorphous core overcomes a feature of iron cores, that of magnetic saturation. Add them to your TU-8900 and a great amp becomes quite magnificent.
The quality of a tube amplifier’s OPTs is extremely important, especially so for single-ended amplifiers. Design is all important as an air gap in the transformer is needed to prevent transformer core saturation, which would cause audible distortion and other problems. Herein lies the challenge: having an air gap lowers the inductance, which compromises low-frequency response yet to increase the inductance requires adding more windings, which adversely affects the high-frequency response.
Sweden's Lundahl is a specialist designer and manufacturer of high performance transformers.
