Maybe a dumb question, but could a carpeted wall behind my amp have any effect on my cabs projection or response in any way? Last night we played on a small stage in a corner where the walls were carpeted. Seems like I had to turn the volume up more and add some bass. Then, there is also another room I play in regularly in which there's a carpet hanging right behind my cab. That room works differently, though. But, I'm wondering what anyone's thoughts are about carpet behind a rear-ported cab. Thanks in advance.