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Hifi shelf support isolation

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28-11-2019 01:13:29 Mobile | Show all posts |Read mode
Currently putting together a DIY rack made from 40mm oak worktop
End panels are on spikes
What is the best way to put the shelves onto the brackets?
My 3 options are
metal spikes
or
metal spikes and gel isolation pads
or
isolation pads
The shelves are to support stereo amp & AV receiver (heavy)
SACD and bluray players
The middle shelf is to take Monitor Audio Gold C350 centre speaker. This has no feet so was thinking sorbothane hemispheres between speaker and shelf?
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28-11-2019 01:13:31 Mobile | Show all posts
None of the above. The benefit of directly fixing the shelf to the framework is damped mass. By isolating the shelf you lose that. I would put hemispheres on the Centre Channel speaker.
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 Author| 28-11-2019 01:13:32 Mobile | Show all posts
B****r! I've already made the shelves 6mm too short to isolate them from the frame. Maybe need to leave them out in the rain overnight... Failing that, based on where I am now...?
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 Author| 28-11-2019 01:13:33 Mobile | Show all posts
I could still just screw the shelves onto the brackets...
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28-11-2019 01:13:34 Mobile | Show all posts
I use acoustic foam to separate my center (also no feet) from the glass shelf it sits on. Not the prettiest solution mind.

Nice job on the unit.
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 Author| 28-11-2019 01:13:35 Mobile | Show all posts
Thank's. Just a bit of fun with a router and a box set of shaped router bits ;-)
I don't have acoustic foam but do have both sorbothane hemispheres and left over foam underlay for both carpet (12mm) and hardwood (2.5mm)
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28-11-2019 01:13:36 Mobile | Show all posts
i would screw them to the brackets. Damped mass will soak up most of the vibration unless you are sticking a BK Monolith next to it, then you are going to need Granite shelves
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 Author| 28-11-2019 01:13:37 Mobile | Show all posts
Thank's @mushii that's me completely screwed up the shelves ;-)
They're totally solid now whereas before they wobbled like Homer Simpson's belly after a deflating fart.
So for the centre speaker best to use sorbothane hemisphere (squidgy) or gel pad (firmer)?
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28-11-2019 01:13:38 Mobile | Show all posts
Sorbothane Hemispheres should be fine.
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 Author| 28-11-2019 01:13:40 Mobile | Show all posts
Using only the hemispheres the speaker wobbles like a jelly so I ended up using both the hemispheres and the gel pads (4 of each) as they are both the same height. Happy with the result.
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