Wavecor SW280WA01

• Sensitivity (1W, 1m, infinite baffle) SPL1W 84.4dB
• Frequency response 26 - 400Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 26Hz
• Mechanical quality factor QMS 6.00
• Electrical quality factor QES 0.43
• Total quality factor QTS 0.40

Large signal parameters

• Maximum linear excursion xmax 6mm
• Air volume displaced at xmax VD 201cm³
• Power handling P 200W
• Program power Pmax 400W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.4Ω
• Inductance (1kHz) LE 1.4mH
• VC Diameter 39mm
• Winding height HVC 17mm

Magnet

• Force factor Bl 13.4N/A
• Motor constant Bl/√RE 7.27N/√W
• Air gap height HAG 5mm

Diaphragm

• Effective diameter 207mm
• Effective area SD 335cm²
• Moving mass MMS 138g
• Moving mass (without air load) MMD 133g

Suspensions

• Stiffness KMS 3.7N/mm
• Compliance CMS 270µm/N
• Equivalent volume to the compliance VAS 43L
• Mechanical resistance RMS 3.8N·s/m

Dimensions

• Nominal diameter 11″
• 279mm
• Volume occupied by the driver (estimated) 1.9L