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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
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.
bo1972's avatar
bo1972
2,789 posts
 
I am in this business for over 15 years of time. In the past I sold a lot Rel subwoofers. Beside this I have done many different tests with subwoofers as well. I would only choose for downfiring for surround. When you have an ols house or woodenfloor you get more drive. The floor makes the low freq even more pronounced. Even with music it can give some more fun. But..... when you want the best what i call steatlth integration with your speakers a closed subwoofer with only one bass unit in front is the way to go. Also in timing and speed this works a lot better. When you have a very fast subwoofer in respons you can use to higher freq. I use mine from 16 hz till 140 hz. From 80 hz low freq. become touchable. With audyssey pro and using it till 14o hz I have full stealth integration with my subwoofer. In the past I thought that this level never would be possible. Time and technique changes and sometimes dreams can come true.
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