This is what 24 12's will do tuned in the low 30's.
Got to where Gorilla tape wouldn't hold them in anymore. Found a local glass shop to seal them up for me. They claim that once they are done, the glass will break before the seal fails. Guess I will have to test that out later on this year. Putting the 16 back in for the summer. Plan on taking a few trips and need the back seats for passengers.