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Speaker Unit Details
FOSTEX FE108-Sol(2015)

FOSTEX FE108-Sol(2015)FOSTEX FE108-Sol(2015)

10cm Fullrange Limited Unit¥19,000(not tax included)/1pc
Aluminum Die-cast Frame

This speaker unit, the "FE108-Sol(2015)", is an 10cm Fullrange Limited Unit Released in December 2015 under the FOSTEX brand as a Limited-edition model, priced at ¥19,000(not tax included)/1pc. Its main specifications include an Impedance of 8ohm, a Sound Pressure Level (sensitivity) of 90dB/W (1m), and a rated power handling of 5W,

To provide reference values for enclosure design, the Lowest Resonance Frequency (fs, f0) is 76.3Hz, and the Reproduction Frequency Response range is ensured from fs to 35k Hz. Designed as a component for back-loaded horn enclosures, an Mms (m0) of 2.9g, and a Vas of 5.36L. 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 Φ103mm, it requires 4 mounting holes, the magnet weight is 451g, the total net weight is 1260g, the overall diameter of the unit is 128mm,

The FOSTEX FE-Sol series is a full-range speaker unit designed for back-loaded horn enclosures. The Sol series employs a double-layer ES cone made from dense, fine fibers. This innovative two-layer papermaking technique achieves both higher rigidity and appropriate internal damping while maintaining a lightweight design. The core layer, composed of long-fiber pulp, provides structural stiffness, while the surface layer of short-fiber pulp enhances the propagation speed on the diaphragm surface. This allows for bright and resonant midrange tones, sharp and clear high frequencies, and rich, full-bodied low frequencies.

Thiele&Small ParametersVoice Coil ParametersMechanical Parameters

fs (f0): 76.3 Hz

Qms: 3.28

Qes: 0.38

Qts (Q0): 0.34

Z: 8 ohm

Re: 6.6 ohm

Le: 0.035 mH

VC Diameter: 20 mm

Mms (m0): 2.9 g

Cms: 1.5 mm/N

Diaphragm R (a): 40 mm

Bl: 4.95 Tesla/m

Enclosure ParametersOther Parameters

SPL: 90 dB/W (1m)

Vas: 5.36 L

Baffle Hole Diameter: Φ103 mm

Frequency Response: fs to 35k Hz

Recommended Enclosure: Back-loaded Horn

Nom.: 5 W

Overall Diameter: 128 mm

Magnet Weight: 451 g

Net Weight: 1260 g

Limited Edition: Yes

Images

frequency

FOSTEX FE108-Sol(2015) - frequency

outline

FOSTEX FE108-Sol(2015) - outline

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