Wavecor SW280WA04

• Sensitivity (1W, 1m, infinite baffle) SPL1W 85.3dB
• Frequency response 35 - 300Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 34.5Hz
• Mechanical quality factor QMS 10.10
• Electrical quality factor QES 0.57
• Total quality factor QTS 0.54

Large signal parameters

• Maximum linear excursion xmax 6mm
• Air volume displaced at xmax VD 193cm³
• Power handling P 200W
• Program power Pmax 400W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.2Ω
• Inductance (1kHz, estimated) LE 2.99mH
• VC Diameter 39mm
• Winding height HVC 17mm
• Former material Black fiber glass

Magnet

• Force factor Bl 15.5N/A
• Motor constant Bl/√RE 6.22N/√W
• Air gap height HAG 5mm
• Weight 1.4kg

Diaphragm

• Effective diameter 202mm
• Effective area SD 321cm²
• Moving mass MMS 102g
• Moving mass (without air load) MMD 97.4g
• Material Aluminum

Suspensions

• Stiffness KMS 4.76N/mm
• Compliance CMS 210µm/N
• Equivalent volume to the compliance VAS 30.5L
• Mechanical resistance RMS 2.2N·s/m

Dimensions

• Nominal diameter 11″
• 280mm
• Overall diameter 282mm
• Baffle cutout diameter 256mm
• Mounting depth 81mm
• Volume occupied by the driver (estimated) 1.7L
• Net weight 3.9kg