Those will want 200 rms at them. I ran my 60's with that kicker zx 450.2 as well. Sounded great can hear the music while riding. I did up my amp to a Syn 2 which had little more wattage being 200 rms per channel. I did notice a slight difference, but can't be for certain it wasn't because of the up in quality of the amp as I bought it for my upgrade to the pro 80's before I bought my pro 80's so was able to run it on my 60's for a bit. The 60's were Not as clear as my 80's, or my rev 8's, but the 80's/rev 8's have more output and a larger cone so it's to be expected.
I wouldn't run that 900.4 ppi. Amp on the 60's. Unless you are a great stereo tuner with a great ear. If you have that set wrong or push it too much it will fry those 60's in a heartbeat. You really won't benefit from anything higher than 200watts. The size of the speaker is really the limit here. Try and mount them as far to the edge of your tower as u can. If you have the swivel option angle them to the edge of the wake. You will gain some sound because u spend more than half the time outside the direct line behind the boat. The 60's won't blow you away sound wise but you can hear the music clearly.
Last edited by xstarrider; 06-03-2013 at 9:09 AM.