What up, CB?!!!
Dude, I love them. Zero regrets, and nothing but warm, fuzzy, house-shaking good times!
I always liked a down-firing sub. Perhaps because thats the way I remember subs being when I was younger. *shrugs That said, I do have some special treatments that I engaged in, but mostly because my room is a flimsy vibrational mess!
If you have carpet that's not too deep, I wouldn't worry about it too much, but I took some dead (acoustically) concrete pads, mounted them on outriggers, and have my subs on those. I did also swap out the stock feet for the SVS Soundpath feet.
Short story long: I have a medium-pile carpet. I had seen some references to putting down firing subs on a platform just so something like mine wasn't the first surface the air would hit. I got the idea for either granite or a wood cutting board from the web. I happened into a local stonework shop that had scrap concrete they do structures with, and when I knocked on it, it was pretty inert. So they gave me a killer price, cut it up, and drilled holes for me. You can go to
Webstaurant and get 18x24 wood cutting boards for around $40 bucks a pop, too. So the outriggers, or spike feet couple the platform to the floor, but minimize surface area contact, thus in theory minimizing sympathetic vibrations from getting to my spongy floor. The spongy feet de-couple the speaker from that platform. My experience with the stock feet just on the platform was better, but the combination of soundpath feet and that platform really made the way the x-13s perform super nice. Bass sounds tighter and more accurate without all the extra household vibration!
Photos are
HERE, post #133.
Come join the club!