Cerwin Vega ST152D

• Sensitivity (1W, 1m, infinite baffle) SPL1W 88.9dB

Thiele & Small parameters

• Resonance frequency (free air) fS 24Hz
• Mechanical quality factor QMS 2.80
• Electrical quality factor QES 0.31
• Total quality factor QTS 0.28

Large signal parameters

• Maximum linear excursion xmax 16.4mm
• Air volume displaced at xmax VD 1328cm³
• Power handling P 1200W
• Program power Pmax 2400W

Voice Coil

• Nominal impedance Z 2 x 2Ω
• DC resistance (in series) RE 3.3Ω
• Inductance (1kHz, in series, estimated) LE 1.58mH

Magnet

• Force factor (in series) Bl 23N/A
• Motor constant Bl/√RE 12.7N/√W
• Diameter 215mm

Diaphragm

• Effective diameter 321mm
• Effective area SD 810cm²
• Moving mass MMS 330g
• Moving mass (without air load) MMD 314g

Suspensions

• Stiffness KMS 7.52N/mm
• Compliance CMS 133µm/N
• Equivalent volume to the compliance VAS 123L
• Mechanical resistance RMS 17.8N·s/m

Dimensions

• Nominal diameter 15″
• 390mm
• Overall diameter 390mm
• Baffle cutout diameter 357mm
• Mounting depth 241mm
• Volume occupied by the driver 5.4L