Fostex / FF165WK

The FF-WK series is a full-range unit designed exclusively for bass reflex use, which is a complete overhaul of the previous FF series structure.

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: 50 Hz
Frequency Range: f0 - 21 kHz
Output Sound Pressure Level: 92 dB/W (1 m)
Input Power: 90 W (Mus.)
m0: 9.5 g
Q0: 0.34
Effective Vibration Radius (a): 6.5 cm
Magnet Mass: 848 g
Total Mass: 1.95 kg