Squash Balls or Spikes...Maybe both!!?? - diyAudio
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Old 25th October 2004, 11:30 AM   #1
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Default Squash Balls or Spikes...Maybe both!!??

My appartment has concrete floors with foam layer then a chip board layer on top.

I have found some sound proofing underlay and am laying wood on top op that. So

Wood Flooring
Sound proofing underlay
Chipboard
Foam
Concrete

My speakers are 15inch Tannoy DC's in a Berkerley cabinet which weigh about 41kg each. Oh yeah....I'm on the first floor!

I need to make sure I don't p##s off my neigbours with the new hard flooring.

Which would be best spikes or squash ball cut in half or........?
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Old 25th October 2004, 12:27 PM   #2
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Default Bad vibes!

(sorry for my english)
Hi JRKO,
search on the stereophile's archives " BAD VIBES " by Shannon Dickson.
The conclusion is symple : without mechanical knowledge you can't
design any audio components!!
Good reading.
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Old 26th October 2004, 05:32 PM   #3
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Default My head hurts

Ok read that...

So solid spiking helps reduce minute see-sawing whilst the driver is on excursion....but some sort of complient material also stops vibration traveling through to the floor.

Although my base floor is concrete I have chipboard on top.

Any mix of say spikes and slightly complient materials can re-introduce the rocking.

Spiking alone will allow the speaker to 'dump' straight onto the floor. As this will be a laminate/real wood layer on top of a sound proofing underlay the flooring may well vibrate.

soooooooo...

Not including cutting out the flooring around the speaker and mounting it on the concrete...does anyone have any ideas?

PS the cabs weigh about 40kg now and may get heavier!
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Old 27th October 2004, 04:38 PM   #4
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(sorry for my english)

You must to souspend the cabinat at a subsonic resonant frequency
(1-2 Hz) with the minimun possible damping.

Not possible with rubber balls or similar ( you can try.......)
It is possible with " AIR SPRINGS"
warning : the result will be incredible.

P.S. :Put the spikes six feet under !
Hi.
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Old 27th October 2004, 05:13 PM   #5
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inertial:

Could you give us more detail on air springs and outline you experiences with them?
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Old 27th October 2004, 05:22 PM   #6
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Air springs under speakers


please tell me more...and dont worry your english is better than my technical understanding. I tey to make up for it with enthusiasm!
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Old 27th October 2004, 06:54 PM   #7
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My speakers are spiked and sit ontop of paving slabs, which inturn sit on the carpet with a thick underlay, I like the sound and I dont think it travels too far.
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Old 27th October 2004, 09:09 PM   #8
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5th Element

From reading those articles spikes and slabs will directly couple you speakers to the floor.....blah blah blah etc etc


Someone help PPPPPLLLLLEEEEESSSSEEEE

I dont have the feintest idea now I have read those articles.......


ANYONE?
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Old 27th October 2004, 09:35 PM   #9
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How about real skinny spikes, like a nail. Drill small holes in the flooring so the spikes can pass through to the concrete. If possible, use 3 for a tripod arrangement.
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Old 27th October 2004, 11:03 PM   #10
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Quote:
Originally posted by Bill Fitzpatrick
How about real skinny spikes, like a nail. Drill small holes in the flooring so the spikes can pass through to the concrete.
His wife will kill him.
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