best setup with 2 kenwood subs?

"Best setup with two Kenwood subs", huh? That's like asking what's the best way to eat a handful of poo. Kidding. Wire the woofers in series, for 8 ohms, then wire them in parallel to the bridged amplifier. This will provide you with the 500 watts the amp is rated for, and 250 watts per woofer, which I think is what you already have... I don't understand "phased wired", but you said (2 channel), so I am assuming that you don't have it bridged presently. Since you didn't provide any model numbers, I can only assume that you have already checked that the amp is respectable, and can actually DO 500 watts, bridged into 4 ohms, AND that the woofers are actually capable of handling 250 watts RMS, each.It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."

ok i have two kenwood dual voice coil subwoofers that are 4 ohm impendance each.  I have a kac-7203 and a kac-8104d amp i want to run 1 subwoofer to each amp for maxium power.  someone please help.  the class d amp is a 1 channel amp but it has speaker ports liek this ++-- i dont know what to do with this because it says 500 rms at 2 ohms but i have no clue how to run one speaker that is 4 ohm impendence to 2 ohms.