Fostex W-400 A-HR - Alnico Magnet

-5 %

RRP 4.468,45 €

incl. 19% VAT plus shipping
Goods have to be ordered
-5 %

Key features:
  • Hi-rigid and reduced inherent resonance HR diaphragm is employed. By using the radial papermaking technique and whizzy hybrid materials, HR diaphragm realizes low distortion, high durability, large internal-loss and fast propagation speed like a metal diaphragm. This unique-shaped diaphragm offers smooth frequency response and superior low frequencyreproduction that the conventional cone diaphragm has never achieved.
  • Newly developed zincky die-cast frame based on the strength analysis by the fineelement method.
  • Stronger magnetic circuit using 3,100g alnico magnet is equipped for higher input durability and larger amplitude driving.
  •  Oval mounting hole can be adjusted between ø370 - ø375mm. W400A-HR has the compatibility with not only FOSTEX old 15” drivers but some famous woofers’ replacements.
  • UDR tangential surround & spider are equipped to realize the less anti-resonance and superior amplitude characteristic.

Short data

Usage as Bass-Midrange
Power Handling 200 Watt
Impedance 8 Ohm
Frequency from 25 Hz
Max. Frequency 2.5 kHz
Sound pressure 94 dB


Overall dimensions 395 mm
Baffle cutout 350 mm
Depth (Total) 242 mm
Frame Material Aluminium diecast
Membrane Type HR
Membrane Surround Foam Plastic
Membrane Material Hybrid
Voice coil Ø 100 mm
Magnet-weight 3100 g
Magnet-inductance 19.5 T


Resonance fs fs: 25 Hz
Mechanical Q Qms: 8.2
Electrical Q Qes: 0.32
Total Q Qts: 0.31
Equivalent Air-Volumen Vas: 310 Liter
DC-Resistance Re: 6 Ohm
Coil Inductance Le: 2.64 mH
Mech. Compliance Cms: 0.33 mm/N
Moving Mass Mms: 130 g
Max. Excursion +/- Xmax: 5.5 mm
BL Product Bl: 19.5 N/A
Membrane Area Sd: 820 cm²
Sound pressure dB: 94 SPL
Efficiency Nref: 1.4 %

Frequency & Impedance

Technical Dimensions

PDF-Product information

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