Here is your chance to own great subs for next to nothing. I bought these subs for my son and also bought the boxes to put in his truck. He didn't follow through with his end of the bargain by getting all A, B 's so I am selling them. I am not a stereo guy but I found info on polks website about the speakers which I included below. They are in perfect working order and the boxes are included along with the 2 10 inch subs as pictured. feel free to ask me questions I will try to answer them as best as possible. Box sizes each are H 14 1/2 x L 18 x bottom 7 wide top 4 wide. Flat 40 dollars shipped anywhere in US with insurance. No reserve auction POLK AUDIO SUBWOOFERS All GNX subwoofer drivers use stiff, textured mineral filled polymer cones. Their dustcaps are rigid injection molded ABS, designed to add rigidity and strength to the woofer cones. This allows GNX subs to be used in sealed enclosures without distortion due to cone buckling or creasing. Vented pole pieces are used to help cool the voice coils and increase power handling. The GNX subwoofers are tuned to provide excellent performance in sealed, vented and bandpass enclosures. GNX Series subwoofers use extra long pole piece magnet structures, which ensure that they do not "bottom out" when driven hard. These large computer designed magnet structures increase efficiency to 92dB or greater, and provide high SPL from even modest amplifiers. The Butyl rubber surrounds used in these subwoofers provide superior performance and reliability when compared to other surround materials. The three-way gold plated input terminals accept fast-on, soldered or screw connections. GNX 104 – 10" 4 Ohm, MSRP $129.95 each.