Best current footers for preamps?


To isolate unit from any table/support vibration?
ptss

Showing 9 responses by geoffkait

Suspend it with thread. If you can find it preferably sapphire thread.

jl35
997 posts
06-08-2016 7:50am
"is the thread directional ?"

Probably best to try it both ways.  Better safe than sorry.

smrex13
226 posts
06-09-2016 11:43am
"I have found that vibration control is a critical part of maximizing the performance of the system. However, I think "YMMV" applies here more than in any other area. The factors that will affect the performance of footers include: the composition and stability of your rack, the component chassis, the overall resolution of your system, the type of component (tube/ss), the microphony of the tubes, the type of floor in your listening room, the energy thrown into the room by your speakers, etc."

vibration control also extends to the transformer and isolating the circuit boards from the transformer vibration, damping the capacitors (which produce micro vibration) with cork or Marigo VTS Dots, damping the chassis with Marigo VTS Dots or some other constrained layer damping material. And those ubiquitous little ribbon cable connectors are an accident waiting to happen vibration wise.

geoff kait
machina dynamica


jl35
1,001 posts
06-10-2016 8:47am
"also important to isolate from airborne vibration. it seems many products that keep out floor vibrations, keep in airborne vibrations..."

Damping the chassis, tubes, capacitors, CD transport, etc. addresses airborne vibrations. Or if you use an iso stand, damping the too plate is also useful in dissipating any vibration in the component whatever it's source - transformer, acoustic waves in the room, motors, etc.

I have two words, Golden Sound Super DH (Diamond Hardness) Cones. NASA grade ceramics. The next hardest material next to diamond. 9 point 5 something on the Moh scale. For extremely rapid transfer of energy. Plus each DH Cone can support some unbelievable amount of weigh. Cannot beat with stick. Tip: they work like magic on top of components and speakers.

geoff kait
machina dynamica
audioman58
527 posts
06-11-2016 11:31pm
If You can afford it this is one of Technologies Best !!
You have heard of Mag Lev Magnetic energy to Levitate.
I just may buy one for my Vacuum tube pre amplifier
Check this out, http://www.higherfi.com/hf/shelf1.htm

mag lev is sort of interesting but the nature of the beast is that you can never get
the top plate completely free and clear of the bottom plate. The interface between two opposing magnets in a mag lev system is extremely "slippery" such that the top plate will slide over and locate itself against a stop post, providing a path for vibration to the component on the top plate. Still, I like mag lev stands and they're light years ahead of a lot of things. It’s easy enough to build your own mag lev iso platform with neodymium magents and short hollow tubes.

cheers
audioman58
528 posts
06-12-2016 11:18am
"My brother has had 2 in his system for several months now.
One for his dac,thd other his DHT tube preamp.
We compared to my other per items and his still points.
This Maglev aRe far better then anything out there.the low level detail and separation noticeably better,as well as soundstage image depth.
The only limitation is the 55-60 lb max weight. They may make for bigger amps
Now possibly."

just a comment that it might have been a bit of a stretch to say that "this Maglev are far better than anything out there." For example, did you compare the Maglev in question to say, Vibraplane or Minus K or the Townshend iso stand, you know iso stands that are well documented? Having built Maglev devices myself I have an appreciation for what they can and cannot do. I also have designed sub Hertz airspring iso stands and many other types of iso platforms.

Cheers,

GK, Machina Dynamica
tbg
5,214 posts
06-12-2016 5:42pm
"audioman58, a long time ago I had Sony likepole magnet feet and later a platform from Italy much like what you are talking about.

Such devices behave just like springs.The Sonys were best as they did not slide to one side. They were about the size of the Stillpoints Ultra Fives.

I don’t like spring isolators."

i appears there’s a lot of folks who disagree on the dodgy subject of springs and isolation. You know, the thousands of Vibraplane users, not to mention Minus K, Townshends iso stands, in fact almost all iso platforms are spring based in one form or another. As well as the many university labs who employ bungee cords or similar springs for isolation. Even the project to detect gravity waves LIGO employs spring based iso systems. Of course, it’s always possible to implement these systems incorrectly or ineffectively. C’est la vie. Isolation is part science, part art. In the special case of maglev devices it’s not that they act like springs, it’s that there is no physical pathway for vibrations to get to the component. It's levitation. As I said earlier the slippery interface of opposing magnets results in a small pathway where the top plate, by necessity, comes in contact with one of the stops.

Geoff Kait
machina dynamica