Hardest hitting crew cab Silverado

[Triticum Agricolam]

Please read in the description of popular subs that are put in the box.

http://www.soundoffaudio.com/ported-quad-8-for-2007-2013-gmc-sierra-crew/

Ask the guy who builds those boxes how much port area there is and what its tuned too. Port area is a very important box spec and that port sure looks small to me.

[catch 22]

Sundown sd-3 8s in a sealed box?

[CrewcabBass918]

Anyone thinking of buying the box for quad 8s from sound off dont! Box is shit and customer service is even worse!!! I will have custom box for 4 sa8 v3s done at end of week. Anyone currious feel free to ask questions!

[zanekeimigdesigns]

I have run 4 dd 608's under backseat and i have run a dd 3510 under my backseat i have nearly 2.6 cubes with my seat spacers i made. I moving on to either 2 3010's or a single 3015