Lay out duct tape in nice thick layers making no room for fiberglass to drip
on your carpet
Here I used some tin-foil to cover the rest of the floor board.
Start
applying the first layer of matting ( using clothe syle mat may be eaisier).
Apply several layers allowing drying time untill it is about 1/4 inch thick..
Remove
mold just by pulling up the tape and running your hand behind it to loosen it
up.
Then
you have a perfect fit mold. Then you need to start experimenting with speaker
placement so you trim you pod mold.
Trim
the mold after determining speaker placement.