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Agoraquest • View topic - Audio Airware

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View topic - Audio Airware

Audio Airware

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by Maxxwire » Mon Apr 17, 2006 12:14 am

Failure is a relative concept. The pneumatic decoupling of the Power Amp was only judged a failure because it was a slightly inferior application to the one I am currently using.

If I had tried using pneumatic decouping with the inner tube on the Power Amp 2 years ago I would have judged it a resounding success because it would have worked much better than the Resonance Modification I was using at the time.

Its not that the inner tube didn't work well because it actually worked extremely well just not quite as well as the rigid coupling that is currently in place.

~Maxx~
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by Maxxwire » Tue May 02, 2006 10:36 pm

Has anyone else here ever tried using a small inner tube for the pneumatic decoupling of Audio equipment?

~Maxx~
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by RickeyM » Wed May 03, 2006 6:54 pm

I have one under my CDP but I have tried an A/B test to see if there's a difference. I want to add a piece of wood of some sort attached to the bottom plate for some added rigidty and mass too.
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by Maxxwire » Wed May 03, 2006 10:37 pm

High mass, rigdity and dampening are the qualities you would be looking for in a platform to go between your CD Player and the pneumatic decoupler.

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by RickeyM » Thu May 04, 2006 9:07 pm

What would work better in the inner tube, er, bladder, high pressure or low?
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by Maxxwire » Thu May 04, 2006 11:28 pm

RickeyM- The most common advice I have read is not to over inflate.

You might start with just enough pressure in the PDD (Pneumatic Decoupling Device) to adequately support the CDP and incrementaly add air until you feel that you are getting the best response.

What type of rigid high mass platform did you put under the CDP and how is it coupled to it?

I will be very interested in hearing about the results you get.

~Maxx~
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by RickeyM » Sat May 06, 2006 8:27 pm

 What type of rigid high mass platform did you put under the CDP and how is it coupled to it?

I will be very interested in hearing about the results you get.

~Maxx~


...Still working on that. Been kinda busy with my MMG mods (including external x-o boxes), experimental room treatments, asst home projects, PC desk project, etc.

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by RickeyM » Sat May 06, 2006 8:30 pm

Really, really busy with the desk....

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by Maxxwire » Sun May 07, 2006 10:32 pm

RickeM- That's one nice finish you put on that wood! What kind of wood is it and what did you use for a topcoat?

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by RickeyM » Mon May 08, 2006 5:28 am

Thanks for the compliment on the finish. The wood is simply a cut down 2'x4' quarter-inch "Handy-Panel" from Home Depot, glued onto a piece of MDF. I picked the Handy-Panel because veneer is expensive and if I botched this, I was only out a $4 piece of plywood.
The base is Minwax Polyshades Classic Oak (four coats) and Minwax polyurethane on top (three coats so far).  Yesterday I got the top sanded down smooth and ready for a couple of finish coats.
I read about wet sanding the final coat with #400 grit and Lemon oil or Mineral oil. Any other suggestions? This is my first "fine finish" project .

Back to that CDP, I'm thinking of adding a layer of Dynamat type material on the bottom. Then experimenting with some wood shelving or MDF fastened to the bottom.
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