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DIY speaker isolation base for a wood floor

A definite sonic improvement in tightening up the bass. 
1. Start with 4 aluminum cones. I used some old Mod Squad Tip Toes.
2. 16x16 slab of granite.
3. 1/8 cork.
4. 1/2 inch neoprene rubber.
5. 1/8 cork.
6. Top with another 16x16 slab of granite.
7. Enclosed with a wood cradle to hide the mechanism.
  The granite is from scraps from a shop and was cheap. The added 1/4 inch of neoprene to 1/2 inch thickness did help. Let me hear your thoughts.
128x128blueranger
audiozenology
362 posts
 
Goeffkait, can you use that expertise and review my math wrt the spring resonance for the OP?


Blueranger, what is the spring constant of the new springs (57 lb rated)?   As your platforms are not overly large, shorter springs as well would be "safer" due to less angular movement (say if you bang into them).
twoleftears's avatar
twoleftears
5,318 posts
 

Here's some design inspiration for you.

https://d3h6k4kfl8m9p0.cloudfront.net/stories/QGqBYd-jLxsDXnvcPHIHCA.jpg

mitchagain
443 posts
 
I know an engineer and he has restaurant clients that have him calculate how often that they need to tighten the screws on a ceiling mounted beer mug holder that you typically see in a bar.

The reason for this is primarily vibrations from vehicle traffic. If the screws aren't periodically tightened, then the beer mug rack will eventually come crashing down. Based on this example, I'd say vibration issues is a real thing.


Ag insider logo xs@2x
cleeds
5,949 posts
 
mitchagain
I know an engineer and he has restaurant clients that have him calculate how often that they need to tighten the screws on a ceiling mounted beer mug holder that you typically see in a bar.

The reason for this is primarily vibrations from vehicle traffic. If the screws aren't periodically tightened, then the beer mug rack will eventually come crashing down
I guess this engineer doesn't believe in lockwashers.
blueranger's avatar
blueranger OP
719 posts
 
Thanks Georgehifi! The sorbethane came in today from the eBay seller you showed me. Playing the first couple of songs of the Chicago CD I had listened to last. It sounds wonderful. Maybe placebo but I will know later tonight. I got some more springs but not wide enough and too narrow. I'm still going to try the spring method as Geoff likes some day. Right now things are sounding good!
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