Actually the best way is to either take off that back peace by the subwoofers completely or add holes since its a ported box from the factory. Search Tadda on the MKV forums
Wait don’t they come with the JBL audio system stock like most high trim level Toyota’s do?! I had a highlander that had the jbl system and it sounded awesome!
I’ve been flipping that off and on regularly trying to figure out which I prefer. I’m having a hard time deciding which way like better (which probably means I should just stop thinking about it either way, ha). It makes it tougher to compare with the relative volume increase with surround on too