Is a down-firing sub into carpet OK?


I have a down-firing sub and it is firing right into carpet? Is this ok or should I get something for the sub to sit on like a slab of marble?
matchstikman
It works fine for me (REL strata), and I've had the sub on carpeted slab, and carpeted suspended wooden floors.

Be careful with raising the sub, as the sub may be designed to load the room very close to the floor. When I tried it with mine it sounded worse. (As did spikes)

If you can get a cheap slab of something then I'd give it a try, but I wouldn't necessarily expect an improvement.
My REL Storm III is on a carpeted floor (carpet on concrete slab). Sounds fantastic