Cerwin Vega V124D

• Sensitivity (1W, 1m, infinite baffle) SPL1W 84.1dB

Thiele & Small parameters

• Resonance frequency (free air) fS 26.4Hz
• Mechanical quality factor QMS 8.00
• Electrical quality factor QES 0.71
• Total quality factor QTS 0.65

Large signal parameters

• Maximum linear excursion xmax 17.3mm
• Air volume displaced at xmax VD 848cm³
• Power handling P 450W
• Program power Pmax 900W

Voice Coil

• Nominal impedance Z 2 x 4Ω
• DC resistance (in series) RE 6.4Ω
• Inductance (1kHz, in series, estimated) LE 4.58mH

Magnet

• Force factor (in series) Bl 16.6N/A
• Motor constant Bl/√RE 6.56N/√W
• Diameter 166mm

Diaphragm

• Effective diameter 250mm
• Effective area SD 490cm²
• Moving mass MMS 185g
• Moving mass (without air load) MMD 177g

Suspensions

• Stiffness KMS 2.38N/mm
• Compliance CMS 420µm/N
• Equivalent volume to the compliance VAS 62.3L
• Mechanical resistance RMS 3.83N·s/m

Dimensions

• Nominal diameter 12″
• 320mm
• Overall diameter 320mm
• Baffle cutout diameter 272mm
• Mounting depth 144mm
• Volume occupied by the driver (estimated) 2.7L