O-k heres my problem.........I have 2 Kenwood 12's. 600 Watt max. 160 RMS. 4-ohms. I am looking at a Legacy 690 American Series 2. Its max watt is 1000. It says...."Bridged Watt RMS" is 250 x 2. Will that amp work with my speakers? It doesnt say if it is 2 ohms or 4ohms.