Fountek FW222

• Sensitivity (1W, 1m, infinite baffle) SPL1W 86.8dB
• Frequency response 50 - 3000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 34.6Hz
• Mechanical quality factor QMS 2.61
• Electrical quality factor QES 0.61
• Total quality factor QTS 0.49

Large signal parameters

• Maximum linear excursion xmax 7mm
• Air volume displaced at xmax VD 153cm³
• Power handling P 75W
• Program power Pmax 150W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.8Ω
• Inductance (1kHz, estimated) LE 1.46mH
• VC Diameter 50mm
• Winding height HVC 20mm
• Winding material Copper
• Former material Aluminum

Magnet

• Flux density B 1T
• Force factor Bl 8.7N/A
• Motor constant Bl/√RE 3.34N/√W
• Air gap height HAG 6mm
• Material Ferrite

Diaphragm

• Effective diameter 167mm
• Effective area SD 219cm²
• Moving mass MMS 30.2g
• Moving mass (without air load) MMD 27.7g

Suspensions

• Stiffness KMS 1.43N/mm
• Compliance CMS 700µm/N
• Equivalent volume to the compliance VAS 47.7L
• Mechanical resistance RMS 2.52N·s/m

Dimensions

• Nominal diameter 8″
• 222mm
• Overall diameter 224mm
• Overall depth 95mm
• Volume occupied by the driver (estimated) 0.89L
• Net weight 2.3kg