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Isolating speakers from the floor



 
 
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  #11 (permalink)  
Old September 10th 08, 10:10 AM posted to uk.rec.audio
Dave Plowman (News)
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Default Isolating speakers from the floor

In article ,
Doki wrote:
Has anyone got any experience and suggestions of DIY methods of
isolating speakers from the floor? I'm looking to do it to reduce the
amount of noise transferred through the floor to downstairs, rather
than as a method of altering sound quality.


Makes little difference - the sound waves produced by the speaker will
still go through the floor.

--
*If all is not lost, where the hell is it?

Dave Plowman London SW
To e-mail, change noise into sound.
  #12 (permalink)  
Old September 10th 08, 10:11 AM posted to uk.rec.audio
Dave Plowman (News)
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Default Isolating speakers from the floor

In article ,
Graham. wrote:

"Doki" wrote in message
...
Has anyone got any experience and suggestions of DIY methods of
isolating speakers from the floor? I'm looking to do it to reduce the
amount of noise transferred through the floor to downstairs, rather
than as a method of altering sound quality.



If I have understood the question correctly...


...have you considered a good boarding school?


His parents won't pay for it. ;-)

--
*Dancing is a perpendicular expression of a horizontal desire *

Dave Plowman London SW
To e-mail, change noise into sound.
  #13 (permalink)  
Old September 10th 08, 10:33 AM posted to uk.rec.audio
David Looser
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Posts: 1,883
Default Isolating speakers from the floor

"Dave Plowman (News)" wrote in message
...
In article ,
Doki wrote:
Has anyone got any experience and suggestions of DIY methods of
isolating speakers from the floor? I'm looking to do it to reduce the
amount of noise transferred through the floor to downstairs, rather
than as a method of altering sound quality.


Makes little difference - the sound waves produced by the speaker will
still go through the floor.


It'll make a fair bit of difference. Solids are rather better conductors of
acoustic energy than air is. So if the speakers are mechanically coupled to
the floor a lot more acoustic energy will be transferred to it that if the
only coupling is via the air inside the room.

David.



  #14 (permalink)  
Old September 10th 08, 11:18 AM posted to uk.rec.audio
Phil Allison
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Posts: 927
Default Isolating speakers from the floor


"David Looser"
"Dave Plowman (News)"
Makes little difference - the sound waves produced by the speaker will
still go through the floor.


It'll make a fair bit of difference.



** ABSOLUTE ******** !!


Solids are rather better conductors of acoustic energy than air is.



** Shame how the damn cabinet is NOT the source of the sound pressure in
the room.

That pressure, distributed all over the floor area IS the cause of floor
vibrations.

So if the speakers are mechanically coupled to the floor



** Have to glue the cones to the floorboards to get that

- YOU COLOSSAL IDIOT.




...... Phil





  #15 (permalink)  
Old September 10th 08, 01:21 PM posted to uk.rec.audio
Phil Allison
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Posts: 927
Default Isolating speakers from the floor


"Jim Lesurf"

You could try either isolation mountings of the kind sold for various
engineering purposes, or a half-inflated inner tube. I've used both
methods
for optical tables to cut down vibration transfer levels.



** Funny how people isolate their TTs from floor vibrations to stop LF
feedback while usually leaving their speakers alone.

Could be because nothing you do with them makes much difference.

Funny that.......



...... Phil



  #16 (permalink)  
Old September 10th 08, 02:22 PM posted to uk.rec.audio
Gijs Rietveld
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Default Isolating speakers from the floor


"Doki" schreef in bericht
...
Has anyone got any experience and suggestions of DIY methods of isolating
speakers from the floor? I'm looking to do it to reduce the amount of
noise transferred through the floor to downstairs, rather than as a method
of altering sound quality.

My Infinity kappa 600 speakers are well isolated by double tiles of 25kg
each, so 50kg per speaker and between the tiles are very simple tabs wich
are normaly used for furniture to preserve scratches on the floor.
Gijs


  #17 (permalink)  
Old September 10th 08, 02:30 PM posted to uk.rec.audio
Ian[_3_]
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Posts: 4
Default Isolating speakers from the floor


"Doki" wrote in message
...
Has anyone got any experience and suggestions of DIY methods of isolating
speakers from the floor? I'm looking to do it to reduce the amount of
noise transferred through the floor to downstairs, rather than as a method
of altering sound quality.

You can't do much about it. Using stands will do no good. If it is bass
that can be heard
you just need to turn it down. It is the sound that can be heard and not
from the actual
case itself.


  #18 (permalink)  
Old September 10th 08, 02:30 PM posted to uk.rec.audio
Ian[_3_]
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Posts: 4
Default Isolating speakers from the floor


"Don Pearce" wrote in message
et...
Phil Allison wrote:
"Don Pearce"
Doki wrote:
Has anyone got any experience and suggestions of DIY methods of
isolating speakers from the floor? I'm looking to do it to reduce the
amount of noise transferred through the floor to downstairs, rather
than as a method of altering sound quality.
This is not easy; if you make an isolation system that works down to an
adequately low frequency, it is likely that the speakers will be
unstable and wobbly. You could always hang them from the ceiling. Anyone
living above?



** That is 100% IDIOT advice.

The cabinets are NOT responsible for shaking the floor.



...... Phil





Well, you answer the question then - do you need me to repeat it?

d


He's gone off to have a Google as he doesn't have a clue.


  #19 (permalink)  
Old September 10th 08, 03:11 PM posted to uk.rec.audio
Jim Lesurf[_2_]
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Posts: 2,668
Default Isolating speakers from the floor

In article , Gijs
Rietveld wrote:

"Doki" schreef in bericht
...
Has anyone got any experience and suggestions of DIY methods of
isolating speakers from the floor? I'm looking to do it to reduce the
amount of noise transferred through the floor to downstairs, rather
than as a method of altering sound quality.

My Infinity kappa 600 speakers are well isolated by double tiles of
25kg each, so 50kg per speaker and between the tiles are very simple
tabs wich are normaly used for furniture to preserve scratches on the
floor. Gijs


How did you work out or measure the LF turnover point of the above as an
isolation filter, and what value did you get? :-)

Particulary curious to know the spring and loss coefficients of the 'tabs',
and the effective mass/ compliance the floor presents to the things above
it.

Slainte,

Jim

--
Change 'noise' to 'jcgl' if you wish to email me.
Electronics http://www.st-and.ac.uk/~www_pa/Scot...o/electron.htm
Armstrong Audio http://www.audiomisc.co.uk/Armstrong/armstrong.html
Audio Misc http://www.audiomisc.co.uk/index.html

  #20 (permalink)  
Old September 10th 08, 03:13 PM posted to uk.rec.audio
Phil Allison
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Posts: 927
Default Isolating speakers from the floor


"Ian the IDIOT "
"Don Pearce
Phil Allison


** That is 100% IDIOT advice.

The cabinets are NOT responsible for shaking the floor.


Well, you answer the question then - do you need me to repeat it?


He's gone off to have a Google as he doesn't have a clue.



** So you HAVE finally wanked yourself blind and cannot see my answer to
the OP ??



.... Phil







 




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