Specifications:
New PBX dust cap 
12" 4-Ohm Subwoofer
400 watt RMS/800 Watts Max
Proprietary Non-pressed Paper DDC Coated Cone 
High Roll Santoprene® Surround
2.0" Vented BASV Voice Coil Former
Perimeter Aero-Vent Voice Coil Cooling Vents
Proprietary Non Resonance Polycarbonate/Glass Fiber Basket
Chrome Push Terminals
Optimally Designed for Both Small Sealed or Ported Enclosures
Nominal Impedance: 4-ohm
BL: 14.814
Inputs: Single Coil
Subwoofer Frequency Range: 33 Hz - 450 Hz
Voice Coil Size: 2 in
Material: Non Pressed Paper
Magnet Size: 186 oz
Sensitivity (1W / 1M): 91 dB
Motor Structure: 186 oz
Cutout Diameter: 11 1/16" (281mm)
Mounting Depth: 5.7 in
Xmax: 8.5 mm
Spl: 91 dB
No: 0.306%
Qts: 0.57
Qes: 0.64
Qms: 3.73
Mms: 171.9 g
Cms: 127.8 uM/N
Vas: 38.832 Ltr
SD: 551.55 sqCM
Fs: 33 Hz
Test Impedance: 3.8-ohm
VC Impedance: 4-ohm
Size: 12 in
Sensitivity: 91 dB
Frequency Response: 33 Hz - 450 Hz
Voice Coil Size: 2 in
Power Handling (RMS/Peak): 400 / 800 watts