Marine stereo/speaker question

Thank you sir.

I can't think of a stereo that will actually put out 40w per channel. The best will do like 30. Even the newer ones rated at 50 won't do 40.

That being said, if you put 200w to 99.99999% of coax speakers rated for 200w, you'll blow them up. Manufacturers way over rate them, because they know people relate higher wattage ratings to better speakers. I have much higher quality speakers in my truck that are correctly rated at 90 rms and 150 peak, and I have about 80 going to them consistently. They distort if I turn it up anymore.

Moral of the story is that you'll be perfectly fine, and those speakers are matched well to that radio

My older amps and speakers are much better than my new amps and speakers. The amps use much higher quality materials and tend to be underrated, and the speakers are rated as they should be. MB Quart is one manufacturer that took a nose dive over the past 5 or so years. Even bigger companies like Rockford will rate an amp at 1500w that'll only put out 500 on a good day.

Some companies are dedicated to producing high quality stuff, but high quality = high quality price