I'm really interested in getting some component speakers for my new truck, but I'm a little confused on how much power I'll need for an amp. The speakers I'm looking at are the Kicker KS65.2. It says the speakers are 4ohms and require 150watts peak/75 watts RMS. Is this per speaker or for the pair? I'm looking to hook them up to my amp with gives 2 x 85 watts RMS @ 4ohms and 2 x 160 watts RMS @ 2ohms. I was planning on getting 4 components and wiring the pairs in series but running them on 2 seperate channels from the amp. Do you think my existing amp will work or do I need one with more power?