T90A-ST Horn Tweeter

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Fostex

The FOSTEX T90A-ST is a high-performance horn super tweeter based on the T90A, specially upgraded with a newly developed ring-shaped titanium diaphragm for improved sound quality. Combined with a low-distortion Alnico internal magnetic circuit, this tweeter achieves a wide frequency response range, offering smooth high-frequency extension and excellent transient response.

With a precision-machined thick-walled aluminum alloy cylindrical horn and equalizer, the T90A-ST delivers clear and penetrating sound expression. Its sound pressure is finely tuned for easy integration with various speaker systems, such as back-loaded horn systems, enabling a natural, transparent, and highly detailed soundstage.

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Newly Developed Ring-Shaped Titanium Diaphragm

The titanium diaphragm is formed into a ring shape, offering excellent transient response and clear, penetrating sound.

Low-Distortion Alnico Internal Magnetic Circuit

Utilizes an Alnico magnet, ensuring high magnetic flux density in a compact design.
Copper plating on the pole piece surface reduces current distortion for improved sound quality.

Thick-Walled Aluminum Alloy Horn & Equalizer

The precisely machined thick-walled cylindrical horn delivers natural and delicate sound quality.

Gold-Plated Terminal & Copper-Silver Alloy Wiring

quipped with gold-plated terminals compatible with banana plugs; internal wiring uses φ1.4mm thick copper-silver alloy for enhanced sound quality.