here's a few ideas for amps . probably best to figure out what amp you are gonna run before ordering subs so you get the right ohm load when it all comes together . as for figuring the power and ohms , add the rms power of the number of subs together and that is that . 2 subs @ 500 watts rms each = 1000 watt rms together .
your ohms can go 1 of 2 ways depending on how you wire , if you paralell 2 coils the ohm load drops by half , 2-4 ohms coils paralell = 2ohm , if your wire 2 coils in series it doubles , 2-4ohm coils in sereis =8ohm load .
hope this helps .
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