Speaker Unit Details
FOSTEX FF225K
20cm Fullrange Unit
Steel frame
This speaker unit, the "FF225K", is an 20cm Fullrange Unit Released in 2000 under the FOSTEX brand as a regular model, Its main specifications include an Impedance of 8ohm, a Sound Pressure Level (sensitivity) of 96dB/W (1m), and a rated power handling of 31W, with a maximum power capacity of up to 100W.
To provide reference values for enclosure design, the Lowest Resonance Frequency (fs, f0) is 38Hz, and the Reproduction Frequency Response range is ensured from fs to 14k Hz.
The frame is made of Steel frame, the required baffle hole diameter is Φ185mm, it requires 4 mounting holes, the magnet weight is 1067g, the total net weight is 3720g, the overall diameter of the unit is 200mm, and the depth is 93mm.
| Thiele&Small Parameters | Voice Coil Parameters | Mechanical Parameters |
|---|---|---|
fs (f0): 38 Hz Qms: 3.06 Qes: 0.17 Qts (Q0): 0.16 | Z: 8 ohm Re: 6.3 ohm VC Diameter: 50 mm | Diaphragm R (a): 84 mm |
| Enclosure Parameters | Other Parameters |
|---|---|
SPL: 96 dB/W (1m) Baffle Hole Diameter: Φ185 mm Depth: 93 mm Frequency Response: fs to 14k Hz | Nom.: 31 W Mus.: 100 W Overall Diameter: 200 mm Magnet Weight: 1067 g Net Weight: 3720 g Limited Edition: No |
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