Fountek FW322 8ohm

• Sensitivity (1W, 1m, infinite baffle) SPL1W 89.9dB
• Frequency response 40 - 900Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 40.1Hz
• Mechanical quality factor QMS 4.89
• Electrical quality factor QES 0.51
• Total quality factor QTS 0.46

Large signal parameters

• Maximum linear excursion xmax 8mm
• Air volume displaced at xmax VD 412cm³
• Power handling P 300W
• Program power Pmax 600W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.8Ω
• Inductance (1kHz, estimated) LE 3.48mH
• VC Diameter 75mm
• Winding height HVC 24mm
• Winding material Copper

Magnet

• Flux density B 1T
• Force factor Bl 19.5N/A
• Motor constant Bl/√RE 7.48N/√W
• Air gap height HAG 8mm
• Material Ferrite

Diaphragm

• Effective diameter 256mm
• Effective area SD 515cm²
• Moving mass MMS 112g
• Moving mass (without air load) MMD 103g

Suspensions

• Stiffness KMS 7.09N/mm
• Compliance CMS 141µm/N
• Equivalent volume to the compliance VAS 53L
• Mechanical resistance RMS 5.75N·s/m

Dimensions

• Nominal diameter 12″
• 322mm
• Overall diameter 317mm
• Overall depth 152mm
• Volume occupied by the driver (estimated) 3.2L
• Net weight 7.4kg