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i all,
just thought i would share my DIY vibration isolation Quadra Super Ultimate Isolation System, or "QUSPIS" (patents pending).
I needed something to isolate my turntable from vibration and footsteps, kids dancing, body slamming etc. From the Research and Development department of my kitchen table, with great pleasure i bring to you:QUSPIS
View Video of System in action at Rigorous Testing Facility: https://flic.kr/p/D2nKZv (look at photostream for more photos)
Testing was performed by skilled technician Equiped with special equipment to measure horizontal and vertical vibrations, aswell as unwanted resonances.
simple to build and requires almost no tools and can be used under any device up to 35 lbs or so i would guess.
Materials:
-Large 3.5" felt/foam furniture sliders pads(16 pack 9$ at Home depot)
-12"x12" cork squares about 1/4" thick(4 pack 5$? @ Fred Meyers)
on a side note i made cork turntalbe mat out of it, very good.
-Sling shot 3/8" metal balls(pack of 75 4$ Fredy's)
thats about it. Optional i used green velcro, garland tie .5"wide aroud sides 30ft 1$ home depot.
cut cork into squares and Use standard single hand held hole punch(used for paper) to make holes for where the steel balls will go. glue to pad. i used hot glue gun for cork to pad and balls to cork. Try not to get glue allover the balls, its hot and hard to remove.
Voila!
now about the sound: things became better separated, better detail, more delicate. Again according to the Technician doing the testing things improved.
let me know what you think.
val
Follow Ups:
Thanks! for sharing- Val.
I find balls and then a few other materials works well too.
ET
yes! inspiration comes from seeing expensive boutique isolation feet all have in common a small point of surface contact. my next line of thinking for version 1.5 QUSPIS is to use a layer of sorbothane instead of or in addition to cork. I plan to raid a yoga shop for exceraising mats, i suspect theres gotta be sorbothane mat. perhaps I will try little sorbothane dots found on amazon...
nt
effective dampening of footfall vibrations with Turntables is hard to isolate on suspended flooring. Well done.
A good starting path towards isolation and for many; possibly all they will need.
Great price and easy to do scores bonus points!
Have you tried both four units or three under a device/speakers to see if there
is much of a discernible audio difference?
"Once this was all Black Plasma and Imagination" -Michael McClure
I have installed four per device under ARC sp16 pre and under M1clic streamer,
the result is discernible diference. First thoughts were a bit more clarity and separation in the higher frequencies.
I installed three unmodified Sliders under my Gunned Magnepans Smga and under the system cabinet. Result was i noticed better bass or a bit louder?, and lower bass extention. smga's are not known for their lower frequency but every bit squeezed out of em is nice. Bass became less flabby or loose. the floor is not vibrating as much which helps for other components in system.
..all of these gizmos are system dependent. I found things similar to these to be most effective in the mids and highs, but not so much in the lows. I use big brass cones (Bear Paws) under my turntable for the best isolation for ME.
The sturdiness/stiffness of the audio rack and the floor play a huge role on what works best IMO.
ET
... putting a lump of something solid (brass) between a component and a shelf(?) is not isolating but coupling.
If you use something shaped like an original tiptoe, and if you can locate the vibrational nodes in your shelf using a stethiscope, the tiptoe shape (point down on the shelf, flat surface in contact with the bottom of the component) will be diodic; vibrational energy will flow to the shelf (as you suggest), but there is no efficient path for energy to go back up into the component (again, if the tiptoe is sitting on a vibrational node, which is fairly easy to locate).
... the shelf vibrates which will move anything resting on it.
I guess I did a bad job of making my point. When a solid object vibrates, there are vibrational nodes. A "node" is a small area on the surface that does not move. I cannot describe this phenomenon in words so it is absolutely clear, but I think of two children swinging a jump rope between them. Where the children grasp the rope, there is essentially no movement of the rope; the children are at the nodes or represent the nodes. At the center of the length of rope strung between them, there is maximal movement. That's what happens when a shelf vibrates, too. These points can be fairly easily identified by tapping on the shelf while listening with a stethoscope at various points on the surface. If you place a tiptoe or any other footer over such an area it will not be activated by "vibration" of the shelf. If you use tiptoes judiciously in such a manner, you can pretty much avoid excitation in the vertical direction of gear that is supported by the tiptoes. In that sense, the tiptoe acts like a diode acts with respect to voltage.
Hey Fred....KMA Everyone knows what I'm talking about
Do you need to go that low?
... you are coupling to dissipate energy not isolating to avoid it.
Very interesting. Thanks for the post. May have to give them a try.
so to be correct, would hanging a turntable from ceiling be isolation?
hmmm or having a small container filled with special snake oil or other liquid with a floating support to hold turntable aslo be isolation or coupling to dissipate vibration? I may be on to something here. have any of you seen videos where people run on liquid filled pools and dont sink? non-newtonian fluid, wonder how that would sound and isolate/couple/decouple
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