I will meter it when i have more then 1800 watts to it, but it is very clean sounding, deep as hell, and pretty **** loud..sounds alot better then my btl i had firing up with the port back.. Wanting to put 3500 to the pair
Had it metered? How does it sound ported like that?
I have my sub back and port back with the equipment in my sig(same trunk as you, GM epsilon platform)... And have mild windshield/steering wheel/rear door flex, ...windshield wipers jump around. Try flipping that box around.