spec: 500w Max, 160w Nom, 4 ohm, Model TS-W303C
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Diamondplate Foamed IMPP (Injection Molded Polypropylene) Rigilite™ Composite Cone Woofer (Titanium Grey)
One-Piece Cone Construction for Reduced Distortion
Dual-Layer Urethane Surround
Direct-to-Cone Voice Coil Mounting Ring
Conex Damper with Damper Ring
Lead Wires Integrated into Damper for High Reliability and Improved Power Transfer
Oversized Glass-Imide Voice Coil Bobbin
Projected Pole Yoke with Vented Pole
High-Energy Strontium Magnet with Bumped Back Plate
Low-Q Design for use in Small Sealed Box (1.5 cubic foot recommended)
500 Watts Max Music Power
160 Watts Nominal Power Handling
Frequency Response: 18-2,000Hz
Sensitivity (Efficiency): 93dB (1W/1m)
4 Ohm Rated
So you need a 1.5 cubit foot SEALED box per sub, an amp running 100-120 watts per channel (RMS) (400w peak), at 4ohms
for a nice sensible setup