Fostex FW 168 HR - Paper buy at hifisound.de

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FW168HR

Key features:

ø145mm large ferrite magnet and 8mm top plate are employed. Besides, the copper cap is adapted onto the pole piece to reduce the magnetostriction.
HR shape cone diaphragm is employed to realize the weight saving and stiffness property.
The state-of-the-art hybrid material is offered to the diaphragm. Its ideal internal loss and stiffness bring the propagation velocity similar to the near-metal diaphragm.
UDR tangential surround & spider are equipped to realize the less anti-resonance and superior amplitude characteristic.
The foamed rubber is chosen for the surround material. It has the lower density, lighter weight and higher internal loss characteristic than the conventional rubber and the foamed rubber surround has the low youngs modulus and less eigentone.

Short data

Usage as	Bass-Midrange
Power Handling	35 Watt
Impedance	8 Ohm

Frequency from	45 Hz
Max. Frequency	10 kHz
Sound pressure	88 dB

Chassis-data

Overall dimensions	190 mm
Baffle cutout	145 mm
Depth (Total)	97 mm
Frame Material	Aluminium diecast
Membrane Type	HR
Membrane Surround	foamed rubber

Voice coil Ø	35 mm
Magnet Ø	145 mm
Magnet-height	36 mm
Magnet-weight	1090 g

Thiele-Small-Parameter

Resonance fs	fs: 40 Hz
Mechanical Q	Qms: 3.25
Electrical Q	Qes: 0.38
Total Q	Qts: 0.35
Equivalent Air-Volumen	Vas: 15.1 Liter
DC-Resistance	Re: 7.1 Ohm
Coil Inductance	Le: 0.07 mH

Mech. Compliance	Cms: 0.83 mm/N
Moving Mass	Mms: 15.7 g
Max. Excursion +/-	Xmax: 2.65 mm
BL Product	Bl: 8.98 N/A
Membrane Area	Sd: 110 cm²
Sound pressure	dB: 88 SPL
Efficiency	Nref: 0.33 %

Freuqency & Impedance

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