Wavecor WF118WA07

• Sensitivity (1W, 1m, infinite baffle) SPL1W 85.2dB
• Frequency response 56 - 3000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 56Hz
• Mechanical quality factor QMS 7.80
• Electrical quality factor QES 0.38
• Total quality factor QTS 0.36

Large signal parameters

• Maximum linear excursion xmax 4mm
• Air volume displaced at xmax VD 22cm³
• Power handling P 50W
• Program power Pmax 100W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.2Ω
• Inductance (1kHz) LE 0.22mH
• VC Diameter 26mm
• Winding height HVC 12mm

Magnet

• Force factor Bl 4.5N/A
• Motor constant Bl/√RE 2.52N/√W
• Air gap height HAG 4mm

Diaphragm

• Effective diameter 83mm
• Effective area SD 54cm²
• Moving mass MMS 6.9g
• Moving mass (without air load) MMD 6.6g

Suspensions

• Stiffness KMS 0.847N/mm
• Compliance CMS 1180µm/N
• Equivalent volume to the compliance VAS 4.9L
• Mechanical resistance RMS 0.31N·s/m

Dimensions

• Nominal diameter 4.5″
• 114mm
• Volume occupied by the driver (estimated) 0.19L