FE208SS-HP
20cm full rangeDue to the popularity of the product, additional production in limited quantities has been decided!
The release date for the additional production will be announced at a later date.
20cm full-range speaker unit
Features
The FE208SS-HP is a limited release full-range speaker unit newly developed using a development philosophy and proprietary technology that is dedicated to the fundamentals of acoustics.
The HP-shaped diaphragm with a powerful external magnetic circuit consisting of two layers of large ferrites and a proprietary cellulose-nanofiber mixed layer provides both texture and volume in the low frequency range and a straightforward sound quality in the mid and high frequency range with fewer intrinsic sounds, resulting in powerful, yet delicate and expressive music reproduction.
Cellulose nanofiber coated HP-shaped diaphragm
Our proprietary cellulose nanofiber coating technology forms a coating layer consisting of cellulose nanofibers and mica on the surface of the base layer to improve Young’s modulus, specific bending rigidity, and sound velocity while suppressing the reduction of internal loss. The HP (Hyperbolic Paraboloid) diaphragm, which has undergone this treatment, is a new HP shape that has been deeply sculpted and evolved for this model to achieve a high degree of rigidity and resonance dispersion while maintaining light weight. The full-range bass range is fast and sharp, the mid-low range is full, the midrange is bright and taut and straightforward, the mid-high range is natural-sounding, and the high range is fully extended, making music enjoyable to listen to.
Large ferrite magnetic circuit and highly rigid aluminum die-cast frame
Two large ferrite magnets are used in the magnetic circuit to ensure sufficient magnetic flux density. The pole section is equipped with a copper cap to reduce current distortion, and a T-shaped pole shape is used to ensure uniform magnetic flux density distribution, resulting in powerful music reproduction, improved low-frequency texture, and improved mid- and high-frequency sound quality. A highly rigid aluminum die-cast frame is used to support the large ferrite magnetic circuit and eliminate unwanted resonance.
●UDRT damper/edge with excellent amplitude response
The UDRT (Up-Down Roll Tangential) shape is used for the damper and edge. This shape is composed of various surfaces, which improves the rigidity of the overall shape, moving resonance to higher frequencies and dispersing it, thereby suppressing the generation of specific large peaks and achieving smooth characteristics.
Dovetail-less structure
A direct lead is used to draw out the tinsel wire from the voice coil without a dove on the diaphragm, thereby reducing the mass of the vibration system and equalizing the vibration of the diaphragm. In addition, the direct lead is pulled out in the rotational direction from the 180-degree position in consideration of symmetry of the mass distribution.
Faston 205 gold-plated terminals and attached speaker cord
In order to securely connect speaker cords and minimize sound quality degradation, Faston 205 type low-loss gold-plated terminals are used for speaker input terminals, and two stranded wires (SFC103 core wires) with Faston 205 type low-loss gold-plated terminals crimped on one side are provided for connection. Please use them for connection.
Specifications
Main Specifications
Electrical Parameters | |
---|---|
Nominal Impedance | 8 ohm |
Re | 7.2 ohm |
Le | 0.14 mH |
fs (F0) | 32 Hz |
Mechanical Parameters | |
Mms( M0) | 15.1 g |
Cms. | 1.68 mm/N |
Bl | 10.74 N/A |
Loss Factors | |
Qms. | 1.8 |
Qes. | 0.19 |
Qts (Q0) | 0.17 |
Other Parameters | |
SPL (1m/1W) | 94.5 dB |
Equivalent Diaphragm Radius (a) | 80 mm |
Rated Input | 35 W |
Overall Diameter | Ø230 mm |
Voice Coil Diameter | 40 mm |
Reproduction Frequency Response | fs to 23k Hz |
Vas. | 96.38 L |
Baffle Hole Diameter | 186 mm dia. |
Weigt. | 8,260g |
frequency response
![](https://www.fostex.jp/cms/wp-content/uploads/d92332ea2f8a798f94fcc157b9633179.jpg)
External dimensions
![](https://www.fostex.jp/cms/wp-content/uploads/2a7b30b2eec7b1db6ef209335fb73d6f.jpg)