I have read them and here is a quote from Manville:
"a W1v2 can dissipate 150 watts average power for eight hours or more with signal peaks of 600 watts. So, we rate the speaker for 150W continuous power. This way, when a customer needs to choose an amp for it, they will hopefully choose one that can make about 150 W clean power... Even if they clip the bejeezus out of that amplifier, it is unlikely that the speaker will fail thermally"
I do not know your audio background. I do know that you read alot about it. I agree with you on most things audio. But I have experienced people blowing subs due to lack of power and too much power. And I have also experienced JL audio denying warranties because of it.