Fountek FW300DV

• Sensitivity (1W, 1m, infinite baffle) SPL1W 88dB
• Frequency response 39 - 2000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 39Hz
• Mechanical quality factor QMS 3.03
• Electrical quality factor QES 0.58
• Total quality factor QTS 0.49

Large signal parameters

• Maximum linear excursion xmax 12mm
• Air volume displaced at xmax VD 637cm³
• Power handling P 300W
• Program power Pmax 600W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.1Ω
• Inductance (1kHz, estimated) LE 2.03mH
• VC Diameter 50mm
• Winding height HVC 32mm
• Winding material Copper
• Former material Aluminum

Magnet

• Flux density B 1T
• Force factor Bl 14.7N/A
• Motor constant Bl/√RE 8.32N/√W
• Air gap height HAG 8mm
• Material Ferrite

Diaphragm

• Effective diameter 260mm
• Effective area SD 531cm²
• Moving mass MMS 162g
• Moving mass (without air load) MMD 153g

Suspensions

• Stiffness KMS 10N/mm
• Compliance CMS 100µm/N
• Equivalent volume to the compliance VAS 39.6L
• Mechanical resistance RMS 13.1N·s/m

Dimensions

• Nominal diameter 12″
• 300mm
• Overall diameter 314mm
• Overall depth 166mm
• Volume occupied by the driver (estimated) 3.1L
• Net weight 6.6kg