One is not inherently better than the other.
Down firing sub on concrete floor.
Floated subfloor alternate subfloor glue down sub floor and the nail down subfloor system.
That will depend on what type of music you listen to if you don t like what you see move the sub to a mid wall location and repeat the sweep.
As a result the material for the subfloor will acclimate to the temperature and moisture content of the room.
If you have a vinyl floor you may be able to install your flooring directly on top of it.
Get a comprehensive breakdown on which materials to use what to take into consideration and what steps to take for four subfloor systems.
The domino effect starts because of the shaking of the subwoofer box.
Determine how much flooring and materials will be needed.
There is no reason to avoid one design or the other.
Learn how to install beautiful hardwood floors over a concrete slab.
Now it is time to fine tune.
A down firing subwoofer box produces a domino effect if placed inside a room.
It is best to lay the flooring plastic side down directly onto the cement floor.
If the result is more to your liking then you are on to something.
Treat the cement floor with a concrete sealant prior to installation if you find that your floor seems damp wet or that it collects moisture.
Multiply length times width of the room.
Repeat the move measure process as many times as necessary to find the best general location for the sub.
Although the sub shouldn t have any problems with hard flooring or hardwood flooring in general depending on the set up in the room the other speakers etc it s possible that there is just too much reflection in all directions which can cause the subwoofer s channel to overpower the rest or to be under powered and lost.
Regardless of what subwoofer you choose just be sure to decouple it from the floor.
In simplest terms a good down firing sub can perform equally well to a good front firing sub.