Wavecor SW118WA01

• Sensitivity (1W, 1m, infinite baffle) SPL1W 83.7dB
• Frequency response 58 - 1200Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 58Hz
• Mechanical quality factor QMS 8.40
• Electrical quality factor QES 0.41
• Total quality factor QTS 0.39

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 4Ω
• DC resistance RE 3.2Ω
• Inductance (1kHz) LE 0.48mH
• VC Diameter 26mm
• Winding height HVC 12mm

Magnet

• Force factor Bl 4.7N/A
• Motor constant Bl/√RE 2.63N/√W
• Air gap height HAG 4mm

Diaphragm

• Effective diameter 79mm
• Effective area SD 49cm²
• Moving mass MMS 7.9g
• Moving mass (without air load) MMD 7.6g

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