That sort of thinking is why an audio shop blew one of my subs years ago.
I was having them install a new battery, but they decided to start fiddling with my amp gain. I had it turned down to avoid over driving the sub, but they turned it up just below clipping, then blew the sub while testing. Thankfully they gave me a replacement and owned up to their mistake, but it's stuff like that that has me play it safe when giving advice.