I apologize I didnt write that I got from the Maxxsonics guy on another forum, those were his words. The only way you will see those 1700rms is if your voltage stayed steady or at 14.75 volts. You are probably seeing the 1328 volts at 12.8volts (some where in that region and since music is dynamic you wont see 1200-1300 rms from that amp every second). Voltage can be acquired by doing the Big 3 Wiring, adding a HO alternator and batteries. In your case if you stay under 2000rms then you probably wont need an HO alternator right away, just do Big 3 get another battery and a voltmeter to watch your voltage (if it falls or is not steady then more upgrades need to be made). Naw all amps arent the same but the should be consistent with each other (but I dont test amps so I wouldnt reall know but from logic I would assume they would be a few watts off give or take some). If you want to test it then clamp it and bench test it a car audio shop or find a way to do it yourself.