Two way plastic sphere + PVC pipe mixed ML-TL

Hi guys,

I wonder if it has been done, and what would happen if for a 2 way, the midbass driver is placed into a sphere of known volume and then two PVC pipes are supposedly interconnected into the sphere. One PVC pipe will be closed, the other will have a port to mass load the TL. The main ideas are:

-simple materials to experiment with.
-two pipes, one will serve as the speaker offset to kill the closest harmonic
-street lamp plastic sphere as the primary driver enclosure to reduce back radiation of waves towards the cone. P.S I need to check the BSC frequency with spherical enclosures.

The fullrange speaker can then be mounted inside a second sphere, where a "pseudo Nautulus" can be built, a sphere with a pipe opening and aperiodical stuffing.

What do you think of this idea?