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In the Forum: Audio Discussions
In the Thread: Mastodont DIY Rack: Wall Mount?

Post Subject: Steel-slate interfacePosted by N-set on: 11/30/2013

N-set wrote:
I'm looking for a nice material to interface between the steel frame and the slate top
as a contrained layer--would be a sin to loos such an occasion for constr. lay. damping.
After some research, Sorbothane seems unsuitable as it leaks and looses it's properties under the load.
Rubber some claim "deadens" the sound whatever it means. Any ideas?

I think I've finally intelectually worked out a solution for the steel frame-slate interface. No rubber, leather, sorbothane, raw meat etc
but roller bearings, ideally under each slate slab:

Bottom rests on the steel frame, top glued to the slate, now I can experiment with whatever between the bearing and the steel/slate. The main decoupling and damping is there.

This came to me after reading a lot of Barry Diament writings:
http://forums.stevehoffman.tv/threads/attention-barry-diament-and-other-speaker-isolation-gurus.154013/
Apparently the mental mistake I've been making was that I intnded to put the bearings below the air springs, while
Barry advocates the other way around for whatever reason.
For me more logical was rollers first than springs but what do I know about audio vibration controll?
Anyway, the idea is now to put the rack insert on the airsprings too, not on the berings and fuck potential
stability issues---the daughter is quite grown up now, the insert is in the rack's belly,
the visitors who would run full speed into the rack aren't welcome anyway, so with a bit of care it should work ok.
All this vibration cotroll is just a plain pain in the ass...just like ground loops.
Cheers,
N-set

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