FOSTEX W400A
¥ 132,000 (1 piece, around 1992)
Commentary
A 40 cm cone type woofer unit using an alnico magnet.
Fine ceramic coated multi-layer cone is used for the diaphragm.
A double damper is used for the support system.
3.1 kg extra-large alnico magnet is used for the magnetic circuit.
The standard enclosure is a 150 liter bass-reflex type, and even a double woofer can be used at around 300 liters.
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Model Rating
| Method | Cone type woofer unit |
| Aperture | 40cm |
| Impedance | 8 Ω |
| Lowest resonance frequency | 25Hz |
| Playback frequency band | Fo ~ 2.5 kHz |
| Output sound pressure level | 97dB/W/1m |
| Input | 200W(Mus.) |
| mo | 134.5g |
| Qo | 0.24 |
| Effective vibration radius (a) | 16.85cm |
| Magnet weight | 3.1 kg (Alnico) |
| Recommended crossover | 1.5 kHz or less |
| Gross weight | 15.2kg |
| Standard enclosure | Bass Reflex Type (150 liters) |