Building a new box

[Matt34099]

Alright so i have a Memphis Mojo5 15" 1750 rms 3500peak. My question is what size box should i make? I already have a custom box to spec ( 3.5cu. Ft. at 33hz ) . Im looking to build a box to make my sub Overall louder. I love low end bass but also loud boomy bass. I have a 2002 grand prix & my first idea was to build a box & both the sub & port firing up. If i was to do so what cu. Ft should i aim for?

[Wasteland_Audio]

I personally wouldn't suggest running everything pointing up. I had an 02 Lincoln LS with a 15" DD Redline 700, sub and port facing up. Unfortunately i did this because it was the only way it would fit. Problem was no matter how much dynamat i put on the trunk lid it still sounded like a rattle can on the outside. I would suggest port and sub forward.

[MotorCityFats13]

people go port up in things like vans, suv's and hatchbacks.... not 10 inches or less from the trunk lid

[corey0928]

sub and port back in a trunk. unless you seal it off from the trunk and run them both forward. what amp are you using? that could be something to consider changing

[Matt34099]

Im using a Lanzar Opti drive 2000D.

Im pretty much looking for a box to make it louder. Just really used to it kinda want to see how much more i can push it. So i fiured a new box maybe bigger and tunned different.

[Matt34099]

Im using a lanzar opti drive 2000D

Im pretty much used to how this subwoofer plays & hits. Also I pretty much have it tuned so fine it pings. So im not worried about touching my amp settings. Im just trying to see if i made a bigger box and tuned it different, if it would be louder. Just dont know what cu. Ft. Or Hz yet.