Wavecor WF182BD09/11

• Sensitivity (1W, 1m, infinite baffle) SPL1W 85.6dB
• Frequency response 28 - 2500Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 28.5Hz
• Mechanical quality factor QMS 9.10
• Electrical quality factor QES 0.32
• Total quality factor QTS 0.31

Large signal parameters

• Maximum linear excursion xmax 5.5mm
• Air volume displaced at xmax VD 72cm³
• Power handling P 80W
• Program power Pmax 160W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.2Ω
• Inductance (1kHz) LE 0.1mH
• VC Diameter 39mm
• Winding height HVC 16mm

Magnet

• Force factor Bl 6.5N/A
• Motor constant Bl/√RE 3.63N/√W
• Air gap height HAG 5mm
• Weight 0.725kg

Diaphragm

• Effective diameter 129mm
• Effective area SD 131cm²
• Moving mass MMS 23.4g
• Moving mass (without air load) MMD 22.2g

Suspensions

• Stiffness KMS 0.752N/mm
• Compliance CMS 1330µm/N
• Equivalent volume to the compliance VAS 32.4L
• Mechanical resistance RMS 0.46N·s/m

Dimensions

• Nominal diameter 7″
• 178mm
• Volume occupied by the driver (estimated) 0.8L
• Net weight 1.95kg