Wavecor WF223BD01

• Sensitivity (1W, 1m, infinite baffle) SPL1W 87.8dB
• Frequency response 32 - 2000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 32.6Hz
• Mechanical quality factor QMS 14.50
• Electrical quality factor QES 0.40
• Total quality factor QTS 0.39

Large signal parameters

• Maximum linear excursion xmax 6.5mm
• Air volume displaced at xmax VD 139cm³
• Power handling P 150W
• Program power Pmax 300W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.4Ω
• Inductance (1kHz) LE 0.13mH
• VC Diameter 39mm
• Winding height HVC 18mm

Magnet

• Force factor Bl 7.7N/A
• Motor constant Bl/√RE 4.18N/√W
• Air gap height HAG 5mm

Diaphragm

• Effective diameter 165mm
• Effective area SD 213cm²
• Moving mass MMS 34g
• Moving mass (without air load) MMD 31.5g

Suspensions

• Stiffness KMS 1.43N/mm
• Compliance CMS 700µm/N
• Equivalent volume to the compliance VAS 45L
• Mechanical resistance RMS 0.48N·s/m

Dimensions

• Nominal diameter 9″
• 229mm
• Volume occupied by the driver (estimated) 1L
• Net weight 2.5kg