beetle, i agree with every statement you made in your post.
i think you might be missing the point of his question a bit though.
if his radio puts out 100 watts, and the speaker is only rated to handle 25 watts; the speaker could blow with the radio turned up loud.
im pretty sure we all like to have things a bit overrated on power handling so that we are not afraid to turn the radio all the way up.
remember how loud it gets inside a big truck.
i dont think his question was about the impedance of the speaker; rather he was trying to find a source for a speaker that would fit in the stock location on the bottom cover, and would easily handle the audio output of his CB radio without worry.
i hope you dont think im trying to start a dispute or being "crotchety"; i am just clarifying for the original poster.
i very much enjoy reading your posts and look forward to reading many more.
later,
loosecannon