Nobosound Springs

I use them under a vintage AR XA I restored, they seem to do a nice job. I’ve experimented with the number of springs for each foot, but settled on all of them. Seems to be more stable laterally. 

@carlsbad    Thanks, but no, in fact my math is incorrect.  I forgot to divide the figure by 100 for the kg mass of the speakers, so I am left with only 22 zeros.

Yes, my experience has been that well adjusted spikes to hold the speaker utterly rigid to a good solid floor sounds cleaner and more solidly imaged than a flexible support on that floor.  After having my Martin Logan CLX Anniversaries serviced and cleaned and some cap replacements six months ago, I reinstalled on carpet with the soft feet supplied, to confirm the positioning, which I had marked with tape.  After some listening I reinstalled the spikes and stood on the rear boxes to ensure intimate contact with the floor below.  I then re-adjusted the threaded spikes and checked the vertical panels were rigid and unmoving.  The sound was distinctly (sic) improved, although this was not a blind comparison.

My floor is a new screed in a large room laid on an older one with footings below.

But anchoring to the floor only works better then flexible mounts if you have a very solid floor.  Springs/flexibles are better for everything else, although overall I don't believe the result can match spikes on a solid floor - but we don't all have solid floors.  I believe the reason is that allowing the drivers to move or vibrate relating to the listener necessarily smears the sound and particularly imaging - think of the Doppler principle but enormously reduced in magnitude.

I also mount my turntables and disc-players to the solid floor.  They stand on a 5 inch stone horizontal bridged by two similar stone verticals, each standing on a 75x22x5 inch marble horizontal spiked through to the concrete floor.  The best features of the sound is rock solid wide images and clarity of piano and voice.  Most of the highest-end TTs these days rely on mass-loading rather than suspension but their designers build in as much mass as possible.  Nevertheless they will be subject to movement and some vibration if mounted on flexible feet.  I don't go for all this gold-plated excess, preferring Simon Yorke's noughties flagship the S10 with Aeroarm.

Anyone has tried these? https://avroomservice.com/evp-2/
 

EVPs from Norman Varney. I met Norman yesterday at CAF. Very nice guy and very enthusiastic on his EVPs. He had samples on his booth 

Never used Nobosound springs, but I did put Isoacoustics Gaia’s on my speakers and there was an immediate change in the presentation. I was thinking of putting some of their pucks under my amp, but haven’t as of yet.

I have Decware Zen Open baffle speakers - 8" full range drivers from Decware and also the cabinet design from Decware. I built the cabinets myself using the Decware design - v1 was a disaster, so I got my local lumber shop to cut the larger pieces, and v2 is fine. My guess is the speakers weigh 70-80 lb. They are heavy and awkward. I weigh 140 lb and can pick them up, but very awkward. I have a 85 lab, and he is awkward to pick up - but he moves more than the speakers :-)

Last night I took the nobosounds out from under the TT because the legs on the TT kept moving around on the springs. Put the stock TT feet back under the TT and put the hobo's under the amp. Left them under the speakers.

Lots of air, detail and presence around instruments, voices. I listen to jazz, blues, Hendrix, Gary Moore, Steely Dan, classical, Diana Krall, Joni, Miles, Bill Evans, Lyn Stanley. I need to listen to all my albums all over again. I really can't get over the SQ now. A real AHA moment.

The reason I went with springs is I was reading some article somewhere about springs isolating vibrations better. There are also articles about having two dissimilar materials sandwiched by a vibration absorbing material. I sandwiched some 3/4" solid oak with some granite from a local counter place. The sandwiched material in the middle is from a company called ASC. I got ASC from @bdp24 here on this site - THANK YOU!  Its double sided sticky and worked great. The TT and phono preamp sit on this sandwich. The amp is just sitting on the springs on my hifi stand. Going from top to bottom the TT is top, then the phono preamp, then the amp.

I have not tried the cork products pictured above. Not sure how they would work as it looks like you have rubber on top, then cork, then rubber. The articles I was reading said 2 dissimilar materials, with a sound absorbing layer in the middle which is why I used oak and granite. Apparently this is common in auto manufacturing to absorb sounds.