Springs under turntable

The adjustment of the compressive rate like you already know is very important....

The nobsound will do the job.... easy to adjust, because a variation around 2 to 5 pounds on the 80/90 pounds of possible compressive weight is very audible....

I use them without any negative effect on all spectrum.... But the adjustment must be done around 3 or4 % of the optimal compressive force.... It is possible the effect even with this little variation in compressive force is very audible....It is way more easy to do with the addition or substraction of slab of 5 pounds each than with the substraction of one or 2 or 3 springs.... :) If you substract one spring on the seven you are left with a ratio of 1/7 , 5 pounds is under this ratio of compressive force, it is around 2 times more refine adjustment than taking off only one spring at a time( 2 five pounds slabs equal roughly one spring if we equal the maximum compressive force around 85 pounds on the 7 springs) ...When i speak of taking off one spring i means in each of the four boxes under each speakers.... :)

I prefer to add weight because i want my speakers damped....

@slaw

I've experimented with weights on top of speakers in the past, not on springs and found that it's easy to overdamp the cabinet. Not always a good thing.

Are you sure by adding the mass, you didn't actually overdamp, but perhaps moved the resonant frequencies into modes that sounded worse?

TMD dampers on top of a loudspeaker cabinet, the likes of the ETI AMG topper. http://www.audiopolitan.com/blog/eti-amg-toppers-review/

I was an employee of the inventor, almost all you need to know what I mean, is found in reading that review.

@rixthetrick,

I've experimented with the Tecknasonic devices years ago on my then, Monitor Audio Studio 20s. Even though those speakers were solid, those devises worked wonders!

Damped tune mass is interesting concept....Thanks...

@mahgister- I completely agree with you on loading a spring to 3% of its max spring capacity to get the max isolation. I am also working with springs for sometime now. I face two issues when working with springs
1. Spring rate. If you want to get the isolation start around 3-5 cycles for a given load then you have to select springs of very light spring rate. That would lead to using more springs underneath a load and it tends to make the sound harsh, a symptom of ringing...
2. It's important that each spring underneath the load carries equal weight which should be close to 3% of the spring max load bearing capacity. In reality most of the electronics have asymmetrical load and it makes the positioning of these springs difficult underneath a load and very difficult when isolating heavy components like amplifier.
That is why I haven't spent a lot of money in buying a commercial product like Townshend or Solid Tech which would be super expensive yet not solve the 2nd issue.
What I need is a product that would be able to weigh a component and get me the CG location along with its weight distribution in quarters. That would allow me to design & also position the springs underneath any component accurately and w/o any guess work.
Thanks.