What materials to use to isolate speakers

[LSPhil]

Carefully uncork the bottle, savor the contents with pleasure, and after the eighth bottle, take a rest. Once you've regained your strength, place supports under the corners of speakers.
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[Waxx]

Sorbothane hemispheres are effective and not very expensive, and from a real vibration control company with good customer support. You just need to load them properly. The larger ones work better so that will probably mean you add weight -- put a board or concrete/stone platform under the speaker, then the hemispheres under that. The sorbothane otherwise leaves a mark on the speaker cabinet so a platform prevents that as well.

So, for example, if you use 4 of the 1.25" 50 durometer, you want to load them to about 7 lbs. each, so your total weight per speaker need to be about 28 lbs (or about 21 lbs if you just use 3 hemispheres).

https://www.sorbothane.com/wp-content/uploads/sorbothane-spg-hemispheres.pdf

I have a box of some of these for work I could send some but they are for heavier stuff probably you would need to add more weight than what is practical.

Sobothane is great, just like neoprene and ordinary rubber. They all do a good job, so if Sobothane is not to expensive near you, it's valid. But ordinary rubber feet are as good.

I did this weekend test a higher power (garden) speaker i build for a friend, and the tweeter box rests on rubber feet on the woofer. We played at about 110dB SPL(A) at 1m (max volume without overdriving it) measured for a while during this test, with the basscabinet tuned to 30Hz and (bass)heavy UK steppers dub on it and the top cabinet did not move at all, even without straps to keep it in place (like is mostly done with this kind of system). Also when touching the tweeter cabinet during that volume, you could not feel the vibrations of the woofer cabinet at all. The woofer cabinet is on casters and heavy braced. It does help that the tweeter cabinet is heavy also (big compression driver tweeter). When playing real garden parties, we wiill strap the tweeter on the woofer cabinet, just to be safe.

And i did this before with even more powerfull systems and it worked the same way. Sobothane or Neoprene feet are hyped by some as really needed, but ordinary (relative) hard rubber feet work the same way and it's often cheaper.

 

[pjug]

Sobothane is great, just like neoprene and ordinary rubber. They all do a good job, so if Sobothane is not to expensive near you, it's valid. But ordinary rubber feet are as good.

I did this weekend test a higher power (garden) speaker i build for a friend, and the tweeter box rests on rubber feet on the woofer. We played at about 110dB SPL(A) at 1m (max volume without overdriving it) measured for a while during this test, with the basscabinet tuned to 30Hz and (bass)heavy UK steppers dub on it and the top cabinet did not move at all, even without straps to keep it in place (like is mostly done with this kind of system). Also when touching the tweeter cabinet during that volume, you could not feel the vibrations of the woofer cabinet at all. The woofer cabinet is on casters and heavy braced. It does help that the tweeter cabinet is heavy also (big compression driver tweeter). When playing real garden parties, we wiill strap the tweeter on the woofer cabinet, just to be safe.

And i did this before with even more powerfull systems and it worked the same way. Sobothane or Neoprene feet are hyped by some as really needed, but ordinary (relative) hard rubber feet work the same way and it's often cheaper.

I am certainly not an expert but I don't think ordinary rubber material will work as well as sorbothane, although you might be able to get something to work well enough. Sorbothane is designed for this purpose and the company provides the information to use it close to an optimum way. So I would not agree that these are all about the same.

Sorbothane® Viscoelastic Material Properties - FAQ

Sorbothane viscoelastic polymer combines shock absorption, good memory, and vibration isolation/damping. Learn more about our unique one-of-a-kind material.

www.sorbothane.com

 

[Adaboy4z]

I used some 1/4 inch foam I had laying around, cut it to fit the base of the speakers.

 

[JustJones]

Looking at your past posts it looks like you're using Kef R6 horizontal as stereo pair and you don't have a lot of wiggle room in the cabinet. Maybe some of These to protect the speaker and cabinet wood.

 

[blackiridium]

Looking at your past posts it looks like you're using Kef R6 horizontal as stereo pair and you don't have a lot of wiggle room in the cabinet. Maybe some of These to protect the speaker and cabinet wood.

This is perfect, thank you