METERED: 148.4 legal with newer Audiocontrol pressure sensor meter (suction cup type)
Goal with same subs and amps: 150 or better.
Here is the box design. around 5 cubes at 42.5Hz should do it.
2 boxes build and installed, 5/8" MDF with fiberglass and bracing.
Subs installed and ports painted.
Here is with the trimplates installed. Rounded ports and flush subs.
Too loud for the seat, thats for sure! Peak around 51Hz.
Amprack. 2 HiFonics TX1005D and an extra battery... all isolated under the hood.