Theres a panel on the passenger side on my trunk. I called advance and they said all cars have them. My ? is can take it out or block it of bc they said its used for ventilation but my subs make the flaps move and i can hear it.
is there anything else i could do to make these brand new JL audio 12w0's sound better? ther on an alpine mrp m650 600 wattsx1 @ 2 ohms. They are in a ported box and they sound a weird with the HIT and i mean they hit hard but they sound funny to me? I set the gain with a dmm.