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Speaker Unit Details
FOSTEX FE108SS-HP

FOSTEX FE108SS-HPFOSTEX FE108SS-HP

10cm Fullrange Limited Unit¥27,500(tax included)/1pc
Aluminum Die-cast Frame

This speaker unit, the "FE108SS-HP", is an 10cm Fullrange Limited Unit Released in February 2022 under the FOSTEX brand as a Limited-edition model, priced at ¥27,500(tax included)/1pc. Its main specifications include an Impedance of 8ohm, a Sound Pressure Level (sensitivity) of 88dB/W (1m), and a rated power handling of 15W,

To provide reference values for enclosure design, the Lowest Resonance Frequency (fs, f0) is 81Hz, and the Reproduction Frequency Response range is ensured from fs to 28k Hz. Designed as a component for back-loaded horn enclosures, an Mms (m0) of 3.2g, and a Vas of 4.31L. The manufacturer-recommended enclosure type is a Back-loaded Horn.

The frame is made of Aluminum Die-cast Frame, the required baffle hole diameter is Φ102mm, it requires 8 mounting holes, 0the total net weight is 1830g, the overall diameter of the unit is 128mm,

The FOSTEX FE-SS-HP series is a limited-edition full-range speaker unit developed with FOSTEX's foundational acoustic philosophy and advanced proprietary technology. It features a powerful, low-distortion external magnetic circuit with dual ferrite magnets and an HP-shaped diaphragm with a cellulose nanofiber-coated surface. The diaphragm's coating improves Young's modulus, specific bending rigidity, and sound velocity while minimizing internal loss. The HP (Hyperbolic Paraboloid) diaphragm disperses resonances and ensures both lightweight and high rigidity. This series offers fast transient response, robust low frequencies, rich midrange, and extended high frequencies, providing a highly expressive and enjoyable musical experience.

Thiele&Small ParametersVoice Coil ParametersMechanical Parameters

fs (f0): 81 Hz

Qms: 4.13

Qes: 0.43

Qts (Q0): 0.39

Z: 8 ohm

Re: 7.3 ohm

Le: 0.07 mH

VC Diameter: 20 mm

Mms (m0): 3.2 g

Cms: 1.21 mm/N

Diaphragm R (a): 40 mm

Bl: 5.27 N/A

Enclosure ParametersOther Parameters

SPL: 88 dB/W (1m)

Vas: 4.31 L

Baffle Hole Diameter: Φ102 mm

Frequency Response: fs to 28k Hz

Recommended Enclosure: Back-loaded Horn

Nom.: 15 W

Overall Diameter: 128 mm

0

Net Weight: 1830 g

Limited Edition: Yes

Images

frequency

FOSTEX FE108SS-HP - frequency

outline

FOSTEX FE108SS-HP - outline

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