ADVERTISING GROSS INTERNAL VOLUME FOR A PORTED BOX 🫨

Many car audio companies advertise total internal volume of a ported box for their "pre-loaded" or prefab boxes. They exclude net volume!! VERY STUPID!

It's a ported box, the port doesn't count.

I ordered a loaded ct sounds tropo box, advertised as 2.13 cubic feet internal, only to find out that the net volume after port and sub are deducted is actually 1.5.

WHY DO THEY DO THIS!!