I downloaded an spl meter on my phone just for ***** and giggles and it read 120.76 in my car in the drivers seat I don't know if that's good I am running with 4 gauge, gain is low and no bass boost on, and its a memphis ported box. Do you think if I ran 1/0 gauge wire and got a custom box I would do better?
*edit - this was on music
