They’re not expensive in comparison to some hi-fi branded accessories and they’re made in the UK too. I think some of their damping steel is made for the eurofighter and their speaker stands are wonderful material. They also make a variety of accessories with this acoustic damping steel, so you might get a few good ideas after visiting their website.
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Not weird really, you may not have noticed.
In my current system;
Fairly well advanced on the upgrade ladder version of LP12 with DV17D3/Prefix/HCDR
CD3.5 Flatcap
NAC202/NAPSC/HCDR
IXO
2 x NAP 90
Allae’s
Trust me they ring, but if you have read my other posts, its unbelievably only today after many years that I’ve discovered the ringing issue. Having raised it here and found another thread, now closed, I find I havent been alone
I suspect my listening position had a lot to do with it. I wasn’t in proximity of my kit when listening. Big room too.
Yes maybe, theres no mistaking hearing it here though, but I have at least 5 out of 9 Naim components ringing and I’m not sitting close to the equipment.
You sure it’s not a grounding issue?
Grounding? No I dont think so, how do you mean?
I’m not certain, just throwing stuff out there. If you didn’t hear it previously but do now I have to assume something’s changed.
Taking a total punt here but have you tried rebuilding rack?
Also maybe changing stacking order of components to change weight distribution on rack???
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Thanks StuW,
I’m pretty sure it’s nothing to do with the rack. The casework rings from airborne generated energy when playing music (its variable dependant on music style and volume level, clapping my hands near the rack demonstrates the ringing well.
If there was an issue with the rack, I would expect it to be more of a mechanical resonance, tapping the shelves of the rack doesnt cause any ringing which suggests to me that theres no resonance being transmitted through the rack to the components.
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Apparently you can buy medical/veterinary/physio sandbags…
Dread,
I know that car audio specialists use a thin but effective damping material, to regulate resonances inside vehicles. This is usually applied to the metal door skins etc to improve the sound. I think I can recall one type being called something like Dynamat or similar (many other brands available I’m sure!). You could try some of this on the outside of the case initially to see if that improves things. Ultimately, if it works, it is sticky backed so it could be applied inside the case provided this doesn’t cause any other issues (I would run this by someone at Naim first though) ??
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Maybe I could screen the rack off somehow with something acoustically absorbing to stop airborne energy reaching and exciting the casework. 
Acoustic panels?
I have considered this at the sides of my rack as it sits between my speakers. I have two that I could use but never really tried it.
Would be difficult to screen off bass frequencies if they are the culprit.
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Actually No it’s not Bass, tends to be more upper mid pitch frequencies (as demonstrated by the hand clapping) I think and worse as volume increases
Not neccesarily acoustic panels but it’s a possibility, it’s a living room so something aesthetically welcome and not too obtrusive to keep Mrs Dread cool.
And just to screen the lower half of the rack so I can still operate the pre amp and CD player
You could experiment with some Rockwool insulation panels. I did this (covered them with weed suppression material) and moved them into different positions around the room before deciding to buy and place GIK panels.
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Weed suppression material?
Breathable fabric from the garden centre. It was just to contain the Rockwool fibres particularly when I was experimenting with positioning around the room.
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Need to be careful handling Rockwool the fibres are hazardous to health
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An idea worth considering though. My Cottage is 200+ years old and I use a building materials supplier that specialise in traditional & period property stuff that’s safe and ecological. They do a few different insulation materials/boards made from natural wool, wood fibres or cork.
Food for thought…
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Worth a try particularly if you suspect upper frequencies are the problem
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