Back in the eighties, I had a neighbor who had a pickup truck set up for “The Sound Races” it had 6 marine grade batteries in the bed to power it. He said it draw so much power, it would stop the truck motor if he cranked it up without the batteries! I have long forgotten the crazy number of speakers and watts this thing had, but one summer evening we had people over for a backyard BBQ and he wiped out my boom box from across the street!
Cra cra