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Effects of concrete as base for subs, speakers and potentially equipment

Hello, 

 

I am looking for any advice and experience from those that have used concrete as stands, racks, isolation. I have a friend who makes functional art pieces from concrete, coloured and designed to your liking and I was thinking of having some pieces made up for my equipment. I currently have everything on wood, but would like something more pleasing on the eye. My room is well dampened with wood floors. I am after any experience that you might have experimenting with concrete.

subwoofer on concrete slab. Currently have a T9x with a downward throwing passive radiator on a suspended wooden floor.  It needs removing from the floor and I was looking at concrete slabs. 
 

speakers on concrete slabs. Zu union 6 supreme again on suspension floor. They have isolation feet but they could do with lifting higher. I am considering using concrete for this. 
 

finally the equipment. Amp, dac, streamer. Currently on a cheap wooden cupboard with chopping boards underneath. Any experience of electronics on concrete. 

mpoll1

Showing 2 responses by mahgister

mahgister's avatar
mahgister
12,754 posts
 

This is why i use some tuned mass damping  with two sets of springs under and above  differently compressed ...

 

Heavy masses under electronics can be hit and miss. Resonance control requires the mass to be damped. Mass by itself will resonate by at low frequency and will continue to ring if it is not damped.

mahgister's avatar
mahgister
12,754 posts
 

After the excellent suggestions of

mitch2

I will only add that the coupling/decoupling -process worked well for me with thick concrete slab, granite plate, bamboo plate, oak thick plate sorbothane plate, cork plate , shungite plate under the speakers ... all integrated one above the other in the order your ears will dictate😊 ...

My damping of speakers with a load worked well too but is not practical for most ...I used a load tuned to 100 grams ( 80 pounds of concrete) over the speakers and a set of springs compressed by it with another set of springs over the sandwich plates and directly under the speakers  , which is then compressed also by the load, as the set of springs above which  is compressed only by the concrete load , but more compressed because of the speakers weight added to it ... These two unequally compressed set of springs work well to decrease resonance and not only vibrations ... It can be tuned by ears near 100 grams easily ...

Mechanical vibration/resonance controls is so impactful that it is hard to believe ...

Spikes dont work compared to this above ...

 

 
 

 

 

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