Springs under turntable

My turntable and monoblocs are on springs. When I added them to the phono-preamp, I lost bass response. Frequency response tilted up in the mids. No resonant drone or rumble. Replaced with metal cones and all returned to normal.

Just a suggestion, try the springs between the wood platform and the concrete block.

With springs its very important they be tuned to the mass of the component. What seems to work best is a spring soft enough to compress about half way when loaded. If it compresses more than 2/3 then the component is too heavy and you need to use more or stiffer springs. This is what I had with my phono stage at first, and it resulted in way too much deep bass and a somewhat rolled off top end. All I did was add a spring, making the whole suspension stiffer. This tightened up the bass a lot while at the same time improved top end extension.

Phono stages tend to be pretty light weight. I would bet your bass was lost because the phono stage was too light for the springs you were using. You could test this very easily by changing (removing) springs, or adding weight ala mahgister. He has played around and noticed even a change of a pound or two makes a difference in the response.

You have Nobsound, right? Did you try it with fewer springs? You may only need 2 springs per footer. I only need 3, and that’s for the Herron phono stage on BDR Shelf with another small Shelf on top plus one 2 lb dive weight! Once you get the number of springs right fine tune with weight on top of the component. I have a small bag with about 2 lbs of lead shot in it and the difference it makes with cones is barely noticeable but the difference on springs is obvious.

Right now my amp and phono stage are on BDR Shelf, with the springs under the Shelf. Need to try moving them to between the component and the Shelf. When I can find the time..... problem is my system sounds so good now I don’t want to tweak I just want to listen!

I just received and installed these springs under my VPI HW19 Mk4. They replaced existing tapered rubber feet which I then put beneath the SAMA. 

Big, noticeable difference in depth and instrument location. Just an overall, more palpable listening experience. 

With springs its very important they be tuned to the mass of the component.

Yes it is very important and i had the experience of audible differences with a modification of less than 1 % of the compressive mass...(between 100 and 200 grams)

But for those who will use them with small speakers, easy to damp with a load, the use of the boxes springs ask for a DIFFERENTIAL tuned compressive force to eliminate or decrease internal resonance and not only isolate the speaker....

I try an experiment that make an astonishing difference...

I put 4 springs boxes under the damping load on top of my speakers,(75 pounds ) and the differential tuned compressive force created by the addition of the speaker weight, in addition to the damping load, on the springs boxes located directly under my speakers themselves, decrease the standing wave negative power of the internal resonance of the speaker and gives a more natural timbre and a better imaging at the end..
( It was very important and it takes me a few days to fine tuned, this time for the 2 set of boxes springs, the damping load)

For speakers where it is possible to do it, a differential tuned compressive force is very amazing...

Springs are good isolation but they had their own problem and are not perfect, nothing is....But with a differential tuned compressive force they are near perfect yes for speakers....2 problems are there: isolation and resonance....

I wrote that because i had see no one making that experiment ....It seems all use only 4 springs boxes under the speakers and it is not an optimal solution for me because of these 2 problems....

And that experiment solve for me the mechanical embedding of the speakers .....

My springs boxes are on top of a multi layered sandwich platform on my desk, near other components, then it was very important for me to solve that vibrations problem on my desk....... It is done at peanuts costs....

For the electrical grid embedding i create my own solution also not perfect but very effective...The more complex to solve was the acoustical embedding... I just make other improvement today with devices controls of my own and i will speak about that in my thread tomorrow....


My best to you....