need new box ideas

[bassaddiction]

i feel like it should be hitting alot harder, im only hitting like 125 db.

when i play low songs, it sonds like the is playing free air

its a aq hdc3 12

the box is 14 x 14 x 30

the port is 12.5 x 2 and 19 inches long, i think

maybe i can throw someone some cash for a good design

thanks