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Springs under turntable

I picked up a set of springs for $35 on Amazon. I intended to use them under a preamp but one thing led to another and I tried them under the turntable. Now, this is no mean feat. It’s a Garrard 401 in a 60pound 50mm slate plinth. The spring device is interesting. It’s sold under the Nobsound brand and is made up of two 45mm wide solid billets of aluminum endcaps with recesses to fit up to seven small springs. It’s very well made. You can add or remove springs depending on the weight distribution. I had to do this with a level and it only took a few minutes. They look good. I did not fit them for floor isolation as I have concrete. I played a few tracks before fitting, and played the same tracks after fitting. Improvement in bass definition, speed, air, inner detail, more space around instruments, nicer timbre and color. Pleasant surprise for little money.
noromance
mijostyn's avatar
mijostyn
8,570 posts
 
The real problem is subwoofers. You have a significant mass vibrating +- 2 cm.   Any vibration of the enclosure is distortion. This is for any speaker, if you feel the speaker vibrating you have distortion. Putting the speaker on springs will make it worse. Fixing a heavy mass to the top of the speaker will lower the frequency it vibrates at, get it low enough and it becomes insignificant.  This does nothing for cabinet resonance, vibrating panels. This is avoided by thoughtful design.
mahgister's avatar
mahgister
15,051 posts
 
Bars of gold bullion perhaps?
😊😊
Not at all, petrified old heads will do.....

:)
mahgister's avatar
mahgister
15,051 posts
 
Putting the speaker on springs will make it worse.
This is not my ears impressions...

I know my ears are biased.... :)

This does nothing for cabinet resonance, vibrating panels.
2 set of springs boxes instead of one with small difference in load on them will damp the internal resonance...It is very audible... Audible immediately in the naturalness of timbre.....

I know my ears are biased.... :)


lewm
14,680 posts
 
mahgister, You may hear what you say you hear, but the phrase "damp the internal resonance" as a mechanism for what you hear is unclear.  In other words, as is so often the case in this hobby, we have a phenomenon on one hand and a hypothesis on the other, and we marry them often without much evidence.  Can you say how a mass on springs placed on top of a cabinet can "damp the internal resonance"?  I do believe that just placing a  mass on top can lower the resonant frequency of the cabinet, but why the springs?
mahgister's avatar
mahgister
15,051 posts
 
mahgister, You may hear what you say you hear, but the phrase "damp the internal resonance" as a mechanism for what you hear is unclear.
You are right, it is unclear, especially for me....

I only tried to convey my experience....

I tought previously that only springs fine tuned under my speakers could and would do the job...

I was wrong....

Adding some mass on the load to compensate for the weight of the speaker itself and create a slight difference between the load on the springs that are under the speaker and those that are directly under the load on top of the speakers, create a better vibrations controls mechanism...

The only explanation that comes to my mind is that the 2 sets of springs with a slight difference in compression decrease the power of the standing waves negative impact that are associated with resonance...

But i am not a scientist by far...

The only fact is the fact i observed relatively to the tonal accuracy with a second set of springs.... The results is amazing and audible immediately...

Then i will wait for other’s explanation....


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