I just bought 2 L7 12 inch Solobaric kickers, enclosed in the same box, dual 4 ohms(not sure wat it means) But now all i need is an amp to get them thumpin...should i get 1 1000-1500 amp to pump them both, or like 2 500 watt amps each sub? which brand would suit me, good prices, and get my kickers kickin...all opinons are needed thanks alot!! Help me...Jesse