DB DRAG Encloser Help

[Matt A 10+ year member]

I am currently looking to compete in a couple more db drag events before the summer is over however at my last competition I only did a 145.1 on the meter and its not adding up for some reason. My signature has the info about my current system I competed with and I really need help improving my enclosure because that number is 7 db shorter than what everyone else is doing with similar setups. I was told to make a box that is 7.5 cubes before displacements with 100 square inches of port area but that seemed very small to me. Any help would be awesome. Thank you.

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[mast240 10+ year member]

theres alot of things that affect SPL... what kind of box do you have... how much bracing.... whats the wall thickness... what kind of port....

pics of your set up would help ALOT

 

[Matt A 10+ year member]

well after this was posted I did some research and found this....Jacob's Jeep : 4x SA-12s + 4500D = 153.8 dB - SSA Car Audio Forum

this is almost exactly where I want to be in my envoy in street c... in addition to this what is the best way to brace an enclosure with aero ports? thank you

 

[Matt A 10+ year member]

bump