Home Tweakers' Asylum

Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ.

Great minds think alike (somewhat)…

Though I live in my own house, it has a cement slab floor and my single Storm III was causing similar problems.

I built a constrained layer damping platform based on the Symposium patent but leaving out the aluminium outer skins so mine is a sandwich of mdf/hardboard/Gatorboard/hardboard/mdf. It sits on 4 Tiptoes spikes which in turn rest in the cups of 4 Grand Prix Audio 'Isolation Platforms', the name they give their spike cups. I sit the sub directly on top of the platform on it's wooden feet, and don't use spikes with the sub.

I think the smooth surface gives better results with the downfiring sub than carpet underneath did, and the platform certainly reduced the transmission of low frequency energy to the slab.

Yours does look a lot nicer than mine :-)

David Aiken


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