Yes i do understand that i dont need this much power but the amps arnt too expensive. The 160rms amp is $79 and the 280rms amp is $89, so i would rather spend the extra $10 on the extra power.
Depends on the quality of the Amps!(this is for another thread though!)
Answer to your question is probally not, but You're right on the edge of too much power. Too much power will over-excurt the driver, and cause it to prematurely fail due to overheating.
The general rule of thumb (in Pro Audio) is double the amount of Program (or RMS) power that a speaker requires (Amplifiers are usually rated in peak power). Distortion isn't going to kill your speakers, Overheating (over-excursion from too much power ), Square Waves will, or DC will. I hope we all know what a Square Wave is.... as far as DC, I hope we all know what this is as well......
Are you going to be listening to it at full volume all the time? Also that is for the RMS method of measurement, what's the highest peak it can take, (probally 250 watts?)? What Impedance is that 280watts amp rated at? 8ohms, 4, 2? What's the impedance of the speaker? If that 280 watts is peak, then yes you're safe. If the RMS Rating is true then that's -3dB before clip (560 watts peak) then it's probally gonna be a bit too much for the speaker.
don't wanna go into length, but 280 watt amp @ 4ohms is gonna roughly translate into 160 watts @8ohms (Mileage WILL vary from amp to amp).
And just remember that it takes roughly 2x the power, or you must EXACTLY double your speakers and amps to get 3dB more of Volume.
This is how it's explained in Yamaha's Amplifier Guide -
Speaker Power Handling:
Continuous........ 150 Watts
Program (RMS)... 300 Watts
Peak................... 600 watts
Continuous refers to the level of long term average power that the speaker will handle. This is measued at the factory usually using a sine wave, or tome. This is usually a worst-case scenario. This is something that would represent the voice coils heating and failing over a long period (more than 1/10th of a second)
Program refers to measurements using a test signal, usually a varying toned sine wave (more like real-world use). These have less heating effects for a given power level. (more like actual music) or over medium length periods (like a minute or so)
Peak is in reference to the maximum instantaneous short term power that a speaker can handle (general rule is no more than 1/10th of a second).
So you'd wanna get a 600 watt amplifier?? well, yes and no. a 600 watt amp might only be running at 6dB below clip nominal (150 watts minimum). There are many variables to this rule of thumb though, some cheaper amplifiers may choke under load, and will never deliver the full 600 watts, and may even clip at -3dB, thus sending a square wave to the speaker. A decent 300watt Amp will do the job just fine.
Of course this is in a perfect world, so your mileage may vary!