Dunno, my dad set my gains, and he's been in car audio since before 1986 when he went to nationals
I don't use my system as a tool to show off or compete or anything, I just like to have something to listen to, I may be louder if I built another box to a new sub, but I'll stick with the box I have because I don't really want to spend the money or time building a new box, lol =/