Wavecor SW118WA02

• Sensitivity (1W, 1m, infinite baffle) SPL1W 83.5dB
• Frequency response 60 - 1200Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 60Hz
• Mechanical quality factor QMS 8.10
• Electrical quality factor QES 0.50
• Total quality factor QTS 0.47

Large signal parameters

• Maximum linear excursion xmax 4mm
• Air volume displaced at xmax VD 20cm³
• Power handling P 40W
• Program power Pmax 80W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.3Ω
• Inductance (1kHz) LE 0.78mH
• VC Diameter 26mm
• Winding height HVC 12mm

Magnet

• Force factor Bl 5.9N/A
• Motor constant Bl/√RE 2.35N/√W
• Air gap height HAG 4mm

Diaphragm

• Effective diameter 79mm
• Effective area SD 49cm²
• Moving mass MMS 7.3g
• Moving mass (without air load) MMD 7g

Suspensions

• Stiffness KMS 1.03N/mm
• Compliance CMS 970µm/N
• Equivalent volume to the compliance VAS 3.3L
• Mechanical resistance RMS 0.34N·s/m

Dimensions

• Nominal diameter 4.5″
• 114mm
• Volume occupied by the driver (estimated) 0.31L
• Net weight 0.8kg