Wavecor WF275BD01

• Sensitivity (1W, 1m, infinite baffle) SPL1W 88.3dB
• Frequency response 27 - 1500Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 27Hz
• Mechanical quality factor QMS 11.60
• Electrical quality factor QES 0.38
• Total quality factor QTS 0.37

Large signal parameters

• Maximum linear excursion xmax 9mm
• Air volume displaced at xmax VD 281cm³
• Power handling P 180W
• Program power Pmax 450W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.1Ω
• Inductance (1kHz) LE 0.14mH
• VC Diameter 39mm
• Winding height HVC 23mm
• Former material Black fiber glass

Magnet

• Force factor Bl 8.9N/A
• Motor constant Bl/√RE 5.05N/√W
• Air gap height HAG 5mm
• Diameter 120mm

Diaphragm

• Effective diameter 199mm
• Effective area SD 312cm²
• Moving mass MMS 57g
• Moving mass (without air load) MMD 52.7g
• Material Paper / Glass fiber

Suspensions

• Stiffness KMS 1.7N/mm
• Compliance CMS 590µm/N
• Equivalent volume to the compliance VAS 81.5L
• Mechanical resistance RMS 0.85N·s/m

Dimensions

• Nominal diameter 10.75″
• 275mm
• Overall diameter 275mm
• Baffle cutout diameter 227mm
• Mounting depth 138mm
• Volume occupied by the driver (estimated) 1.9L
• Frame material Die cast aluminum