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[Alnico Magnet] This is the first time that the regular FE series has adopted an alnico magnet, which is renowned for its expressive and comfortable sound quality. In addition, copper caps are placed on the pole pieces in the magnetic circuit to reduce current distortion, and the low distortion of the drive system further improves clarity in the mid- to high-range.
[Two-Layer Paper Diaphragm] The cone paper is made from the ES cone, which features fine, flexible fibers and a high density. This two-layer paper construction achieves improved rigidity and reduced internal loss while remaining lightweight. The base layer is primarily made of long-fiber pulp, providing a bulky structure for high rigidity and reduced internal loss. The surface layer is made of short-fiber pulp, increasing the propagation speed of the diaphragm surface. This allows for crisp, well-defined high frequencies and rich bass, while maintaining a bright, taut midrange tone. *Two-layer papermaking (patented) is our proprietary technology, which uses two layers of papermaking to create a single diaphragm.
[Low distortion in the mid-range thanks to the absence of eyelets] The weight of the eyelets added to the diaphragm causes uneven weight balance, which causes unequal division resonance in addition to the circular vibration mode of the cone-shaped diaphragm, resulting in distortion in the mid-range.By eliminating the eyelets, harmonic distortion in the mid-range is reduced.
[Pocket neck damper] The pocket neck damper method is used to achieve the aforementioned eyelet-less design while also achieving three-point bonding, bonding the voice coil, damper, and cone paper on the same circumference.
Gold-plated terminals: The input terminals use Faston 205 type low-loss gold-plated terminals, which not only ensure a secure connection to the speaker cable but also prevent deterioration in sound quality.
Since the introduction of the full-range speaker unit FE103 in 1964 (Showa 39), the FE series has been equipped with ferrite magnets, with the exception of limited edition models. This series is equipped with high-quality alnico magnets that are highly popular among audiophiles, and while maintaining the traditional FE sound's lively, bright, and clear sound quality, it delivers expressive, dynamic, smooth, and comfortable high-quality playback sound. The alnico magnet-equipped "A" series, which joins Fostex's proud full-range tradition, features a special regular series lineup of 8cm and 10cm speakers that maximize the benefits of alnico magnets using cutting-edge technology.