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What's under your sub?

Some sub manufacturers recommend placing a down-firing sub on a slab of marble/granite when the listening room is carpeted. Has anyone had any luck with that? I tried using a granite slab under my REL Storm III and found that the bass was much cleaner with the sub on the carpet and not on the granite. I have carpet over a concrete slab. Don't know if that made a difference.
rockyboy
ptmconsulting
1,000 posts
 
Try taking your downfiring sub and turning it upside down. Place a wooden board on the upturned feet and put something heavy on top to hold it in place. Now adjust your sub volume appropriately (you will likely have to turn it up a bit).

Should be tighter and cleaner than before.
bo1972's avatar
bo1972
2,626 posts
 
When you use a granite plate the low freq. become more tight and timing is also better. less colouration.
mitch2
1,911 posts
 
Sound Anchor stands with edenSound Bear Paws under Aerial SW-12 sub and main speakers. Heavy stands and brass footers provide a stable bass and anchor the speakers through carpet to the underlying concrete floor.
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