Speaker Unit Details
FOSTEX FF125K
12cm Fullrange Unit
Steel frame
This speaker unit, the "FF125K", is an 12cm 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 92dB/W (1m), and a rated power handling of 16W, with a maximum power capacity of up to 50W.
To provide reference values for enclosure design, the Lowest Resonance Frequency (fs, f0) is 72Hz, and the Reproduction Frequency Response range is ensured from f0 to 18k Hz. , an Mms (m0) of 4g
The frame is made of Steel frame, the required baffle hole diameter is Φ104mm, it requires 4 mounting holes, the magnet weight is 420g, the total net weight is 930g, the overall diameter of the unit is 112.2mm, and the depth is 60.1mm.
| Thiele&Small Parameters | Voice Coil Parameters | Mechanical Parameters |
|---|---|---|
fs (f0): 72 Hz Qms: 9.04 Qes: 0.27 Qts (Q0): 0.26 | Z: 8 ohm Re: 7.2 ohm | Mms (m0): 4 g Diaphragm R (a): 46 mm |
| Enclosure Parameters | Other Parameters |
|---|---|
SPL: 92 dB/W (1m) Baffle Hole Diameter: Φ104 mm Depth: 60.1 mm Frequency Response: f0 to 18k Hz | Nom.: 16 W Mus.: 50 W Overall Diameter: 112.2 mm Magnet Weight: 420 g Net Weight: 930 g Limited Edition: No |
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