Vintage HiFi Audio Forum

Audio Discussion => DIY => Topic started by: OconeeOrange on August 21, 2010, 09:25:30 PM

Title: TRY THIS
Post by: OconeeOrange on August 21, 2010, 09:25:30 PM

I am a new guy who has no credibility.

Still, want to share this experience -

On my deck, I have a Polk MicroPro sub.  I like it, but for a year it makes things rattle.
I built this deck overlook, and it is solid, but the chairs and stuff - rattle.

I put the sub on a large concrete yard paver onto of a 1" rubber mat. 

I am not a big bass guy, but excellent music demands the right amount.  My Carver Speakers only go to 80, so you can see the problem.

I was a great foot racer (in my mind) and was always held back from my best by injury.  I found Sorbothane really did work.


I found this on ebay   http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=250446884796&ssPageName=STRK:MEWNX:IT (http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=250446884796&ssPageName=STRK:MEWNX:IT)

It stopped all the rattle and now I can turn my sub up to the level it needs to work.

This might not be a good thing if you like your sub to shake your floor/chair.
If you want tight bass in the air - try this .

You will be amazed at what it does.


OO

Title: Re: TRY THIS
Post by: Falcon on August 21, 2010, 10:38:34 PM

I love sorbothane, great for acoustical damping. Works in speakers, on woofer baskets, CD players, everywhere..

Thanks for the link.

Title: Re: TRY THIS
Post by: Slim-Shaddy on August 21, 2010, 10:47:03 PM

I got really good dampening material designed for computers a couple months ago from some place in Ohio. kI wish I could remember the name ( I think I actually posted about it), but it was really cheap!!

Title: Re: TRY THIS
Post by: rgpit on August 22, 2010, 08:15:04 AM

Here is another source for Sorbothane.

http://scientificsonline.com/product.asp?pn=3037000&cmss=sorbothane (http://scientificsonline.com/product.asp?pn=3037000&cmss=sorbothane)

I agree with OconeeOrange. This is great stuff!

Title: Re: TRY THIS
Post by: F1nut on August 22, 2010, 09:37:45 PM

A few thoughts on Sorbothane. It stains whatever it comes in contact with and you cannot remove the stains. It does not do well supporting heavy objects. That is, the weight will cause the damping properties to diminish over time.

OO, did you try spikes on your sub?

Title: Re: TRY THIS
Post by: OconeeOrange on August 24, 2010, 05:49:18 PM

My sub is on the deck - so stains are no problem.  Never saw a stain in my running shoes though.

Sorbathane actually comes in many densities and the weight levels can be checked on line.   
I actually bought this lighter density to get better results, but higher density can be bought.
This one is rated for 500 pounds per inch.
To go beyond that, I bought two sheets.  I put one 4X4 under the middle of the concrete paver block.  I cut one more into one inch squares for the corners.  That seems to be spread out more than enough to support the sub.  Spikes might concentrate the weight, but the concrete paver spreads it out.  At any rate - it is working quite well. 

I don't think sorbathane compresses quickly.  As a runner, you just put it under your heel and it takes a big hit with each foot strike.  That is thousands of strikes over a ten mile run.  I never wore one out.