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- Jan 5, 2010
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OK, here are the newest updates on my DIY Headfi vibration isolating acrylic stand. The changes I have made are to the shelves. They now have a space for mass loading with material of your choice. While sand and lead shot works well, I prefer the Black Gold material from Lovan. This development is a HUGE advantage, because it allows you to load the shelves at exactly the correct weight to keep the 10lbs per racquetball ratio. This is the ration that Gingko Audio proved to me the perfect weight per ball to accomplish the least shelf resonance, when using an accelerometer and seismic measuring machines.
The top shelf is temporarily filled with individual one pound bags of the Black Gold material, but will be changed to match the bottom shelf tomorrow. The bottom shelf has a black velvet bag inside of it, with the dampening material inside the bag.
The other improvement is the "fence" on the bottom of the shelves. This fence sits at 3/8" out from every side of the edge of each ball. This means if the shelf was to be bumped really hard, it can only travel 3/8" in any direction, before hitting a racquetball and stopping immediately from going any further.
This has been quite a project, but the difference in sound quality is not only astonishing .... it has been measured by scientific instruments, and proven to remove almost ALL resonance and vibration.
Cheers
The top shelf is temporarily filled with individual one pound bags of the Black Gold material, but will be changed to match the bottom shelf tomorrow. The bottom shelf has a black velvet bag inside of it, with the dampening material inside the bag.
The other improvement is the "fence" on the bottom of the shelves. This fence sits at 3/8" out from every side of the edge of each ball. This means if the shelf was to be bumped really hard, it can only travel 3/8" in any direction, before hitting a racquetball and stopping immediately from going any further.
This has been quite a project, but the difference in sound quality is not only astonishing .... it has been measured by scientific instruments, and proven to remove almost ALL resonance and vibration.
Cheers