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
Chashas1,
Please don't be sad for me & please don't pity me - I know when I've shut my mind to new knowledge, when I've opened my mind, when I'm upset at somebody & when I'm agreeable with somebody.
I don't like tooting my own horn & I don't like patting myself on the back. I bring this here only because I believe that it's needed now - Look at my 100s of posts since I joined A'gon & see how many times you can find when I actually got into a fight w/ somebody. You'll find that you can count these instances on 1 hand & you'll also see that it wasn't me who started the fight - it was provoked by the other party.
I'll say this about myself - I'm a pretty agreeable chap & DISLIKE VERY MUCH getting into a fight. I've got an open mind & have NO PROBLEM even a newbie teach me. I DO NOT KNOW everything there is to know about audio. I've never claimed it nor will I.
However, both you, Chashas1 & Halcro have come into this thread with great belligerence & with a great air of superiority & with harsh words for me esp. Halcro. His words have been demeaning & condescending. He has always written his posts in an off-hand dismissing manner. And I take serious offence to this method of treating another A'gon member who happens to be in good standing. There are many other ways to make your point without rubbing the other person the wrong way. Neither of you had the humility to do so. Obviously, you got the fight you were looking for.

While I understand that there are sound transmissions via air-borne & structure-borne, I also realize that these transmissions are doing mainly 1 thing when they come in contact with the rack, shelf, TT plint, TT platter, etc & that is excite resonances.
If the objective is to excite resonances - and, this IS my intention - then there is more than 1 way to do so. I'm sure that you will agree with me on this (there is usually more than 1 way to "skin the cat" as the proverb goes). Thus, knocking on the above mentioned components is 1 method to excite these resonances. These resonances are impact-induced, agreed. The resonances in real-life might not be impact-induced, also agree. However, if you cut thru the chase, what is air-borne & structure-borne sound transmissions doing to the audio gear?? It is principally exciting resonances in those materials.
What is impact-induced sound xmission doing? Also exciting the same resonances!
You will agree with me that a material's resonance frequency is only 1 particular frequency whether it is excited air-borne or structure-borne or impact-induced. Thus, the simple, easy method of using impact-induced sound xmission to debug where one is lacking adequate should be just fine to resolve the issue.
Then, in real-life when these resonances are excited in whichever way that Halcro & you deem correct, the listener can be quite sure that the effects will be minimized.
I believe that both Halcro & you have failed to see this. Both of you have been stuck with the notion that since sound transmissions are only 2 types, one simply cannot debug the issue any other way! You KNOW that's simply NOT correct. The other thing is at this point where I am testing isolation, I believe that I am not concerned with HOW sound transmits to the rack, shelf, plint, platter; what I am concerned with is that somehow the resonances are excited. Both Halcro & you have failed to realize this & keep going on & on about air-borne & structure-borne.
I will NOT believe for a minute that the resonance frequency for air-borne & structure-borne sound xmissions is a different frequency from that for impact-induced. I believe that it just cannot be - once a material resonants it resonants at it's 1 resonance frequency. Thus, for the purposes of debugging the isolation issue, it does not matter how the resonant freq got excited; merely that it got excited.

Both you & Halcro have been pretty demeaning in your posts in this thread & have provided zero knowledge & suggestions on how to actually debug the isolation issues. Atleast Undertow had a much better attitude - he suggested an experiment, shared a story about his friend, trolled the A'gon website & provided links to people's systems as examples for us to look at. Both you & Halcro did nothing of this sort, except waltz into this thread with a great deal of arrogance & an air of superiority. Anybody would take offence to that!

Above is my last attempt to explain where I was coming from. It's very likely that it will still not sink in with you. If that's the case, so be it. I know that I tried. Good day to you, Chashas1 & Halcro.
Oh ... my ... lord. Have you ever crapped all over my well intentioned thread with your eggshell egos and childish need to get the last word in.
Regardless, I have now placed the same isolation under my 70lb integrated, and have heard even more good things, regardless of what generation you may think I am stuck in ... LOL
My sincere apologies to you Timtim. I assure you that is was NOT my intention. Way up in this thread, Emorrisiv wrote "keep it coming" in that he wanted to have a dialogue re. isolation, etc & I posted with very good intentions. Since then I'm afraid that we hijacked your thread. I think that the thread is badly scarred but we might be able to limp back to your intentions for this thread (I hope).

Good to read that you've had very good luck w/ your isolation technique w/ your integrated. I believe that the technique you are using is sound & will yield good results.
Well, it's not really a big deal. At least you guys stayed civil for the most part ..LOL
I just hate to have a thread written off as useless, when the original tweak has done so much good in my system.
So let me throw out a few more thoughts: While there is a TON of BS hype in the world of audio tweak advertising, Gingko has labratory results to back up their cloud platforms. They even have shown real time vibration comparison results on HUGE screens at national A/V events. Take a look at their website for real world experiments with empirical data to prove it.
I think we "audiophiles" sometimes keep looking for the next great thing, when in truth it's already been tried, proven to be successful, and passed over in our over zealousness. The platform under my Lexicon is literally night and day, by a huge margin, and with ZERO psychoacoustic mentality muddling things. Yes ... I have done blind listening comparisons with my family and friends, even if they did think it excessive .. LOL