Wavecor SW270WA01

• Sensitivity (1W, 1m, infinite baffle) SPL1W 85.2dB
• Frequency response 28 - 400Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 28Hz
• Mechanical quality factor QMS 8.10
• Electrical quality factor QES 0.53
• Total quality factor QTS 0.49

Large signal parameters

• Maximum linear excursion xmax 11mm
• Air volume displaced at xmax VD 343cm³
• Power handling P 150W
• Program power Pmax 300W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.2Ω
• Inductance (1kHz) LE 1.4mH
• VC Diameter 51mm
• Winding height HVC 28mm

Magnet

• Force factor Bl 9.7N/A
• Motor constant Bl/√RE 5.42N/√W
• Air gap height HAG 6mm

Diaphragm

• Effective diameter 199mm
• Effective area SD 312cm²
• Moving mass MMS 88g
• Moving mass (without air load) MMD 83.7g

Suspensions

• Stiffness KMS 2.7N/mm
• Compliance CMS 370µm/N
• Equivalent volume to the compliance VAS 51L
• Mechanical resistance RMS 1.9N·s/m

Dimensions

• Nominal diameter 10.5″
• 267mm
• Volume occupied by the driver (estimated) 1.5L
• Net weight 3.6kg