Fostex / FF125WK

The FF-WK series is a full-range unit designed specifically for bass reflex use, with a completely revised structure from the previous FF series.

The FF-WK series features a new ""two-layer cone"" construction, a ridged-dome aluminum alloy center cap, and a pocket neck damper to further enhance sound quality.
This delivers powerful low frequencies and characterless high frequencies while maintaining clear, realistic sound quality.

Impedance: 8 Ω
Minimum Resonance Frequency: 67 Hz
Frequency Range: f0 - 22 kHz
Output Sound Pressure Level: 89 dB/W (1 m)
Input Power: 50 W (Mus.)
m0: 5.0 g
Q0: 0.42
Effective Vibration Radius (a): 4.6 cm
Magnet Mass: 388 g
Total Mass: 0.92 kg