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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
mattmiller's avatar
mattmiller
1,497 posts
 
NOTHING but the floor! anything under the sub DECOUPLES it from the room . That's not good for true sub bass!
wolf_garcia
6,724 posts
 
I have my front firing REL on the wood floor in a smallish corner (formed by a gas faux fireplace) behind a main speaker...simple pads on it so it doesn't scratch the wood, and it works for me so I've never even tried any other way. I do put my mains (Silverline Preludes) on butcher blocks with Vibrapods under the speaker base to lift 'em and decouple things...the "pods" turned out to be a very good thing for some reason.
whitecap
121 posts
 
Two different approaches in different systems. In the office system, I use a Sub Dude under a Velodyne. It made a very surprising and significant, instant improvement to tighten up the bass, correct for more tuneful bass, and reduce boom.

At home in the main system, I use ASC Sub Trap under a JL Audio F112. Also helped, significantly, reduce boom and tighten bass.
oak244's avatar
oak244
54 posts
 
This is interesting... I have a VMPS sub with a Front firing 12" and a 15" Radiator firing from the bottom. Right now it sits on a thick carpeted floor on the second floor, so its a wood subfloor. any thoughts??
donjr
1,335 posts
 
My front firing
REL B2 is on hardwood floors with nothing but felt on the feet I believe. Zero problems. I love my REL.
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