Wavecor SW178WA01

• Sensitivity (1W, 1m, infinite baffle) SPL1W 84.5dB
• Frequency response 36 - 600Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 36Hz
• Mechanical quality factor QMS 18.40
• Electrical quality factor QES 0.35
• Total quality factor QTS 0.35

Large signal parameters

• Power handling P 100W
• Program power Pmax 200W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.4Ω
• Inductance (1kHz) LE 2.2mH
• VC Diameter 39mm
• Winding height HVC 16mm

Magnet

• Force factor Bl 12N/A
• Motor constant Bl/√RE 4.74N/√W
• Air gap height HAG 6mm
• Weight 0.68kg

Diaphragm

• Effective diameter 129mm
• Effective area SD 131cm²
• Moving mass MMS 35g
• Moving mass (without air load) MMD 33.8g

Suspensions

• Stiffness KMS 1.79N/mm
• Compliance CMS 560µm/N
• Equivalent volume to the compliance VAS 13.6L
• Mechanical resistance RMS 0.43N·s/m

Dimensions

• Nominal diameter 7″
• 178mm
• Volume occupied by the driver (estimated) 0.74L
• Net weight 1.81kg