Speaker spikes or rubber feet - Page 3 - Home Theater Forum and Systems - HomeTheaterShack.com

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post #21 of 47 Old 02-20-14, 05:42 AM
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Re: Speaker spikes or rubber feet

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AudiocRaver wrote: View Post
Other possibilities.
  • Make the stand stable so that it cannot vibrate and root the speaker to the stand, as above. The stand stability can be partly structural and partly by filling it with shot or sand or gravel or bricks or something that makes the whole structure dense and immovable. If this is accomplished, the interface between the stand of the floor seems to be of minimal concern, and you can do whatever you need to protect the floor.
  • Have a "floating" interface between the speaker and the stand. The best way to do this is magnetic levitation. I have actually heard of people doing it experimentally and claiming miraculous results. Seriously, there are pads made of materials meant to acoustically float this speakers off the stands. I do not even remember where I saw them. I think the theory here is: If you cannot keep your stand from vibrating, better to isolate the speaker from the stand so only the speaker cabinet is vibrating. I think the approach that stops all vibration except the actual speaker transducers is best overall, but if that is not practical, then this approach might be better than nothing.
Yes there are special brackets that are available with rubber or spring mounts built into the middle of them. Any vibration is absorbed there.
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post #22 of 47 Old 02-20-14, 09:34 AM
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Re: Speaker spikes or rubber feet

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Mikeythai wrote: View Post
Thanks for all the input guys.

I am still designing my speaker stands, so it now looks like I should think about how they will stand on the floor (which is granite).

Rubber pads between speaker and stand, and spikes between stand and floor sounds pretty good. And yes, they do seem to include the 'bases' for the spikes.
Don't get hung up on spikes/rubber feet..decoupling a speaker etc. The biggest sonic improvement you will be getting is having the tweeter at ear level while you are seated. Any benefits from spikes as to speaker decoupling will be a negligible improvement if any. Based on your floor, I would use rubber feet and also and between speaker and stand. Spikes will serve you no audible improvement.
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post #23 of 47 Old 02-20-14, 09:39 AM
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Re: Speaker spikes or rubber feet

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AudiocRaver wrote: View Post

Other possibilities.
  • Have a "floating" interface between the speaker and the stand. The best way to do this is magnetic levitation. I have actually heard of people doing it experimentally and claiming miraculous results. Seriously, there are pads made of materials meant to acoustically float this speakers off the stands. I do not even remember where I saw them. I think the theory here is: If you cannot keep your stand from vibrating, better to isolate the speaker from the stand so only the speaker cabinet is vibrating. I think the approach that stops all vibration except the actual speaker transducers is best overall, but if that is not practical, then this approach might be better than nothing.
Sounds like yet another audiophile subjective claim of voodoo magic that they can hear but yet shy away from objectively proving their results.
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post #24 of 47 Old 02-20-14, 04:29 PM
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Voodoo...

Long and short is sympathetic vibration reduces the energy sent out from the driver. Force and equal/opposite force... IMO adding mass is the best way to avoid this. Heavy stands and anchored to the floor as possible and the bookshelf speaker anchored to the stand.

We want less vibration. This does affect your imaging and response, albeit less than positioning and room acoustics.

All these tweaks and tricks can provide incremental changes in performance. It will never completely alter your speaker's voice.
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post #25 of 47 Old 02-20-14, 07:44 PM
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Re: Speaker spikes or rubber feet

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rab-byte wrote: View Post
Voodoo...

Long and short is sympathetic vibration reduces the energy sent out from the driver. Force and equal/opposite force... IMO adding mass is the best way to avoid this. Heavy stands and anchored to the floor as possible and the bookshelf speaker anchored to the stand.
Agreed.

Quote:
rab-byte wrote: View Post
We want less vibration. This does affect your imaging and response, albeit less than positioning and room acoustics.

All these tweaks and tricks can provide incremental changes in performance. It will never completely alter your speaker's voice.
Like I stated in my prior post, the fact that the OP gets the tweeters to ear level will provide the single biggest benefit in sound improvement, 1000x more than worrying whether to use spikes or rubber pads. The OP should only be concerned with preventing the speaker from vibrating on the platform. I agree with you that the stands should be made as inert as possible. What I disagree with this in this thread that people think that spikes are the only way to go. However, spikes on a marble floor would be far in above the worst way to go.
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post #26 of 47 Old 02-20-14, 08:13 PM
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If you use spikes you can always put a penny under them so you don't scratch the floors or get the cups for the spikes.

tia,
Ron

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post #27 of 47 Old 02-20-14, 10:53 PM
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Re: Speaker spikes or rubber feet

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ellisr63 wrote: View Post
If you use spikes you can always put a penny under them so you don't scratch the floors or get the cups for the spikes.
Or cut out the middleman completely and just glue pennies to the bottom of your speakers.

Silence is golden but duct tape is silver.

DIY completed:
http://www.hometheatershack.com/foru...-shelf.html
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post #28 of 47 Old 02-21-14, 12:02 PM
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Hi

An important question has not been answered yet :
Quote:
mpompey wrote: View Post
What kind of flooring does your speakers sit on? Hardwood, carpet, tile?
The aim is to get rid of resonances.
And the best solution depends on the construction of the floor

--------------

The optimum would be a solid floor like stone or a glued floor (wood or carpet)
Here spikes are the best solution (3 per speaker).
They couple the speakers tightly to the floor. The resulting system has a higher mass than the speaker alone and thus can better absorb the vibration.

To protect the floor you can get metal washers with the spikes.

--------------

A floating floor construction (e.g. wood) or a more traditional wood floor are not as steady but vibrate and resonate more.
Here it is necessary to isolate the speaker from the floor in order to prevent that the floor resonates.
A resonating floor swallows a lot of bass energy.

So the best solution is decoupling the speakers with rubber feet or special anti resonance feet.
Or even better :

Get a stone tile (3 centimetres thick, 30 x 30 centimetres) to add mass to the system.
Put three rubber feet or anti-resonance feet below and put the Speakers with 3 spikes onto the stone base.

-------------

My speakers came with casters and my listening room has a glued wooden floor.

I replaced the casters with spikes and washers between spikes and floor.

The bass performance got more precise and lost its booming.


I can recommend to look for the best solution for coupling or decoupling.

Cheers
Babak
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post #29 of 47 Old 02-21-14, 01:55 PM
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Re: Speaker spikes or rubber feet

If one hears that much bass improvement from using spikes, I would seriously question the inertness of the speaker cabinet and the over quality of the loudspeaker as a whole.
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post #30 of 47 Old 02-21-14, 02:21 PM
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As it is with all written communication - also here is a lot of room for subjective interpretation.

What you understand as "booming " might be something different than what I wanted to express.

The bass performance was not bad before.
It improved with using spikes and got more contours.

How should simply putting a speaker on spikes compensate for a bad resonating speaker cabinet???
If it would help, manufacturers could save costs by putting drivers into cardboard boxes and put them on spikes that only cost a couple of cents.



I guess most people agree that 4 plastic casters don't provide such a steady standing as 3 spikes do.

So it was more a matter of degrees of freedom for the whole speaker to move rather than the quality of the speaker cabinet.
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