Cerwin Vega VPRO122D

2x2Ω

Subwoofer

Nominal diameter	12″ / 320 mm
Resonance	30.5 Hz
Q factor	0.57
Sensitivity	85.1 dB
Linear excursion	± 18.5 mm
Program Power	1500 W

Cerwin Vega VPRO122D Subwoofer

Specifications

Sensitivity (1W, 1m, infinite baffle) SPL1W 85.1dB

Thiele & Small parameters

Resonance frequency (free air) fS 30.5Hz
Mechanical quality factor QMS 13.30
Electrical quality factor QES 0.60
Total quality factor QTS 0.57

Large signal parameters

Maximum linear excursion (one way) xmax 18.5mm
Air volume displaced at xmax VD 907cm³
Power handling P 750W
Program power Pmax 1500W

Voice Coil

Nominal impedance Z 2 x 2Ω
DC resistance (in series) RE 3.7Ω
Inductance (1kHz, in series, estimated) LE 2.95mH

Magnet

Force factor (in series) Bl 16N/A
Motor constant Bl/√RE 8.32N/√W
Diameter 165mm

Diaphragm

Effective diameter 250mm
Effective area SD 490cm²
Moving mass MMS 218g
Moving mass (without air load) MMD 210g

Suspensions

Stiffness KMS 8N/mm
Compliance CMS 125µm/N
Equivalent volume to the compliance VAS 42.5L
Mechanical resistance RMS 3.14N·s/m

Dimensions

Nominal diameter 12″
320mm
Overall diameter 320mm
Baffle cutout diameter 272mm
Mounting depth 152mm
Volume occupied by the driver 2.29L

Cerwin Vega VPRO122D Dimensions

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