Fostex / FF85WK

The FF-WK series is a full-range unit with a bass-reflex-only design, completely redesigned from the previous FF series structure.

The FF-WK series features a new papermaking method, a ""two-layer paper cone,"" a rigid dome-shaped aluminum alloy center cap, and a pocket neck damper, all aimed at further improving sound quality.

This results in clear and realistic sound quality while delivering powerful bass and treble reproduction without any noticeable character.

Impedance: 8 Ω

Minimum Resonant Frequency: 115Hz

Frequency Response: f0 - 28kHz

Output Sound Pressure Level: 86.5dB/W (1m)

Input: 15W (Mus.)

m0: 2g

Q0: 0.55

Effective Vibration Radius (a): 3.0cm

Magnet Mass: 187g

Total Mass: 0.45kg