Racquetball isolation platform perfection


Racquetball isolation platform perfection ... and DIY style to boot ! Thought I'd share with you my experiment that turned out working perfectly in my system.
Basically I copied a Ginko Cloud platform using $5 worth of racquetballs from Wal Mart and some 1/2" Birch plywood. I used a specialty grinding stone from a local tool store that makes a perfect 1.5" concave in the wood. Cinched it up in my drill press and drilled it down about 1.5" in from every corner, and went down about 3/8" deep. It's allows the balls to move back and forth by about a half inch, and when the top platform is added the CD player simply " floats " on top. just like an original Ginko. This EASILY bested several different cones I have in my collection, a set of Isonodes, a set of Symposium Rollerblocks, and a innertube isolation platform.

Total cost ? $15.

The bass is the tightest and most defined I have ever had in my current system. It made amazing amounts of good things happen under my Lexicon RT-20.

Try it for yourself, it was a winner in my system.
timtim

Showing 6 responses by chashas1

Knuckle rapping and raquetballs are sooo 80's....
I thought I was reading a back issue of Audio.
Come on, guys, progress a little, will ya?
Well, sorry bomby, but you are clearly wrong in asserting that turntable design hasn't changed. You must be locked in some time warp.
I'm not meaning to be an antogonist, sorry, but rapping a table has nothing to do with how it will sound. Fremer used to do that long ago, and has now wised up.
And as for your balls, if you like what they do, fine. I had a friend in the early 80's using those, and tennis balls.
Good luck.
Sorry, Bomby, didn't mean to misconstrue your words.
--I believe turntable design has truly changed through the years. Yes, it's still a rotational platter, yet, the ways to make it spin are everchanging.
--To all you table rappers out there, stop it. It proves nothing. Plus, I'd hate to have you damage your cartridge.
--To all Gingko owners or diy-ers of balls, your product and method can be fine, but not always, not for every situation and product. There are many ways to isolate--cones, points, balls, tubes, sandboxes, air, wood cubes, etc. Many will do a great job of isolating, and of giving support. Not all will "sound" great in a given situation. You may isolate the hell out of your item, but what if it does something to the sound as well? something not good?
--My opening glib comment was just that, these things have been going on for years--years! But I would never be a buzzkill for someone who's taking the interest to try and improve their system. We all start somewhere. For a lot of us it was the 80's.
--Apologies to Bomby.
--I know it's fun to experiment, but why not just use a wallmount if you're trying to isolate something? If that can't do it then you are in serious need of a solution.
Thanks, I am delighted to be forgiven and dismissed all in one paragraph.
I would say, or rather ask, one thing, Bomby, in looking at your system, couldn't most of your problem in needing further isolation be eliminated by removing your source from between your speakers?

p.s. and again, sorry, but you are just plain wrong--a good wall shelf will have less of a sonic signature than the tweeks you have been suggesting. and quit beating on your equipment, you're proving nothing...
Bomby, you have a great chance to learn here, but you are too busy arguing with everyone, i think you will soon start arguing even with yourself. You've had several good knowledgable people give you advice, and you cannot stop to see it. Stop chasing your tail.
I kept checking the thread because I thought you were so funny, now I leave it because I am sad for you.
Timtim, I am glad you like the results you achieved, especially for the dollars invested. Just remember, since you've touted the Gingko results, raquetballs are not Gingko balls. Sometimes we diy-ers get pretty close, sometimes not. If you ever get to hear a comparison in your system let me know.