Cerwin Vega VPS104D

• Sensitivity (1W, 1m, infinite baffle) SPL1W 84.4dB

Thiele & Small parameters

• Resonance frequency (free air) fS 40.7Hz
• Mechanical quality factor QMS 5.00
• Electrical quality factor QES 0.85
• Total quality factor QTS 0.73

Large signal parameters

• Maximum linear excursion xmax 8.8mm
• Air volume displaced at xmax VD 317cm³
• Power handling P 300W
• Program power Pmax 600W

Voice Coil

• Nominal impedance Z 2 x 4Ω
• DC resistance (in series) RE 6.0Ω
• Inductance (1kHz, in series, estimated) LE 3.39mH

Magnet

• Force factor (in series) Bl 15.3N/A
• Motor constant Bl/√RE 6.25N/√W

Diaphragm

• Effective diameter 214mm
• Effective area SD 360cm²
• Moving mass MMS 129g
• Moving mass (without air load) MMD 124g

Suspensions

• Stiffness KMS 8.48N/mm
• Compliance CMS 118µm/N
• Equivalent volume to the compliance VAS 21.5L
• Mechanical resistance RMS 6.62N·s/m

Dimensions

• Nominal diameter 10″
• 268mm
• Overall diameter 268mm
• Baffle cutout diameter 231mm
• Mounting depth 93mm
• Volume occupied by the driver 0.9L