Not sure how accurate but this is what I found online.
Planet Audio VX12D Subwoofers are Brand New in Factory Box
Sold as a Single Subwoofer
Poly-Treated Paper Cone
Proprietary Stamped Steel Basket
Stitched High Excursion Foam Rubber Surround
Dual Flat Spiders with woven Tinsel Leads
Insulated Lead Wires
Cast Aluminum Magnet Cover
Magnet Structure 75 Oz
Exclusive Para-Term connection System
Aluminum Voice Coil Former
Power Handling: 250 Watts RMS, 500 Watts Max
Voice Coil: Dual 4 Ohm
2.0" ASV Voice Coil 4-Layer
Frequency Response: 20-2000Hz
Sensitivity : 92 dB
5.75" Mounting Depth
Recommended Enclosure
1.0 Cu Ft Sealed
1.5 Cu Ft Vented
2.0 Cu Ft Bandpass