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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 1 response by daledeee1

daledeee1's avatar
daledeee1
516 posts
 

I am going to base this on our vibration control at my workplace.  We measured vibration in all frequencies.

You buy a speaker and put it on the floor.  Doesn't matter if it's wood or concrete although wood can flex more.  As the speaker plays it essentially bounces around throwing its sound waves out of phase.  

I think concrete is fine because of the mass ratio vs the speaker, but spikes into the concrete still allow the speaker to vibrate and move.  Another piece of concrete on top of the floor then bounces.

A floor that isn't level also causes phasing issues.

Try a set of $30 springs first. Audiocrast and Nobsound make them, 4 per speaker.  Herbies makes some special silicone also. Either of these examples dampen the items and greatly reduces movement.  Springs are self leveling.  My floor was not level. You can go on up the price scale real soon.  If you try these low cost solutions first and decide if you want to buy something more pricy, or stick with them.

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