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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

Showing 1 response by whitecap

whitecap
122 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.
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