Cerwin Vega HS122D

• Sensitivity (1W, 1m, infinite baffle) SPL1W 83.9dB

Thiele & Small parameters

• Resonance frequency (free air) fS 30Hz
• Mechanical quality factor QMS 5.50
• Electrical quality factor QES 1.05
• Total quality factor QTS 0.88

Large signal parameters

• Maximum linear excursion xmax 8.9mm
• Air volume displaced at xmax VD 472cm³
• Power handling P 250W
• Program power Pmax 500W

Voice Coil

• Nominal impedance Z 2 x 2Ω
• DC resistance (in series) RE 3.0Ω
• Inductance (1kHz, in series, estimated) LE 2.41mH

Magnet

• Force factor (in series) Bl 10.9N/A
• Motor constant Bl/√RE 6.29N/√W

Diaphragm

• Effective diameter 260mm
• Effective area SD 530cm²
• Moving mass MMS 220g
• Moving mass (without air load) MMD 211g

Suspensions

• Stiffness KMS 7.69N/mm
• Compliance CMS 130µm/N
• Equivalent volume to the compliance VAS 50.9L
• Mechanical resistance RMS 7.54N·s/m

Dimensions

• Nominal diameter 12″
• 319mm
• Overall diameter 319mm
• Baffle cutout diameter 283mm
• Mounting depth 97mm
• Volume occupied by the driver 1.05L