5 responses Add your response
I use Auralex Subdude platforms under my bottom ported Ohm 100s. These are available on Amazon and will not break the bank. Very effective in preventing speakers or subs from interacting with the floor acoustically which with many home floors is undesirable and results in fat bass that is hard to tame otherwise and obscures detail elsewhere. I find it always best to eliminate floor interactions any way possible and tweak from there to fine tune the sound.
You’ll probably end up with a marginally lower effective tuning frequency with the port downfiring onto carpet, assuming the feet are fairly short. That’s not necessarily a bad thing. Whether or not the difference will be audibly significant, I don’t know. Which surface is better, well that depends on which results in the best in-room response, and too many other factors come into play for me to be able to predict.
occasional subwoofer designer