I have one diy 18" and I'm working on building a second matching one. The one that is completed already has a Dayton spa1000 mounted. I have someone who wants to trade a crown cl4 (1200wx2 In to 4 ohms) for a Fi driver I am trying to sell. I'm just wondering how a pro amp like that would compare to the Dayton plate amp? Would it be more powerful? Better or worse sound? Reliable? I couldn't find if the cl4 puts out 1200x2 peak or rms, does anyone know how Crown amps are rated?