Cerwin Vega SPRO152D

• Sensitivity (1W, 1m, infinite baffle) SPL1W 87.6dB

Thiele & Small parameters

• Resonance frequency (free air) fS 22Hz
• Mechanical quality factor QMS 2.30
• Electrical quality factor QES 0.31
• Total quality factor QTS 0.27

Large signal parameters

• Maximum linear excursion xmax 33mm
• Air volume displaced at xmax VD 2673cm³
• Power handling P 2500W
• Program power Pmax 5000W

Voice Coil

• Nominal impedance Z 2 x 2Ω
• DC resistance (in series) RE 2.9Ω
• Inductance (1kHz, in series, estimated) LE 3.47mH

Magnet

• Force factor (in series) Bl 22.8N/A
• Motor constant Bl/√RE 13.5N/√W

Diaphragm

• Effective diameter 321mm
• Effective area SD 810cm²
• Moving mass MMS 410g
• Moving mass (without air load) MMD 394g

Suspensions

• Stiffness KMS 7.81N/mm
• Compliance CMS 128µm/N
• Equivalent volume to the compliance VAS 118L
• Mechanical resistance RMS 24.6N·s/m

Dimensions

• Nominal diameter 15″
• 390mm
• Overall diameter 390mm
• Baffle cutout diameter 357mm
• Mounting depth 295mm
• Volume occupied by the driver 8.3L