EASTECH FSB023040-0401

4Ω

Subwoofer

Nominal diameter	4″ / 102 mm
Resonance	82.3 Hz
Q factor	0.49
Sensitivity	85 dB
Linear excursion	± 3.2 mm
Program Power	80 W

EASTECH FSB023040-0401 Subwoofer

Specifications

Sensitivity (1W, 1m, infinite baffle) SPL1W 85dB

Thiele & Small parameters

Resonance frequency (free air) fS 82.3Hz
Mechanical quality factor QMS 5.32
Electrical quality factor QES 0.55
Total quality factor QTS 0.49

Large signal parameters

Maximum linear excursion xmax 3.2mm
Air volume displaced at xmax VD 18cm³
Power handling P 40W
Program power Pmax 80W

Voice Coil

Nominal impedance Z 4Ω
DC resistance RE 3.2Ω
Inductance (1kHz) LE 0.32mH
VC Diameter 25.4mm
Winding height HVC 11.4mm
Winding material PESVW
Former material Polyimide

Magnet

Force factor Bl 4.83N/A
Motor constant Bl/√RE 2.7N/√W
Air gap height HAG 5mm
Material Ferrite

Diaphragm

Effective diameter 84mm
Effective area SD 54.7cm²
Moving mass MMS 7.8g
Moving mass (without air load) MMD 7.5g
Material Paper

Suspensions

Stiffness KMS 2.13N/mm
Compliance CMS 470µm/N
Equivalent volume to the compliance VAS 2.02L
Mechanical resistance RMS 0.76N·s/m
Surround material Rubber

Dimensions

Nominal diameter 4″
102mm
Volume occupied by the driver (estimated) 0.28L
Net weight 0.73kg
Frame material Steel

EASTECH FSB023040-0401 SPL & Impedance

EASTECH FSB023040-0401 Dimensions

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