Any TT building experience?

[walpurgis]

I'm not a believer in mass as an isolator or 'hefty' plinths as such.

Nor me, necessarily. It has its place, as do other approaches.

[Steph]

Hi guys and thank you for your input it is very welcome. I be off to work now. So will be offline. Please keep the ideas and info coming.

Thanks

[Steph]

Do you have access to Solidworks Steph? If you have the correct extension you can do finite element analysis.

Hi Mark, I do not have access to Solid works, sadly. That would be the answer tough. Very interesting thought, thank you.

[Gazjam]

Steph,
What design software do you use?

No doubt you could export your model in various formats and maybe someone could help out with the FEA calcs if need be?
Inventor and Pro-E guy here, but dont have the facility to do FEA.

[YNWaN]

I should perhaps add that my opinion is FEA is no magic bullet and many of the results it gives can be predicted using experience and applied knowledge. In addition, like any investigative tool, it is only as good as the quality of the input and the subsequent interpretation of the results.

[Steph]

Steph,
What design software do you use?

No doubt you could export your model in various formats and maybe someone could help out with the FEA calcs if need be?
Inventor and Pro-E guy here, but dont have the facility to do FEA.

Hi Gaz, Ok dont laugh OK? I use Sketchup I use it professionally for product/landscape and Architectural for about 8 hours a day. I always feel I must justify using this medium but its actually very powerful ( I used to use 3DS Max) You have me thinking though there is a plugin called "sketchy Physics" that may do the trick. And yes i could transfer that to just about any format.

[karma67]

It's not so much that I don't like using wood, just not solid timber in turntables. Even then it partly depends on the wood. The problem with solid timber, as opposed to man made boards like MDF or ply, is that they vary in quality from one batch to another and even within the same piece, they are not as stable as other materials and they have a defined grain structure. All of this is less true of the very hard exotics like ebony but they are not available in sufficient size to make much more than an armboard out of (I've used ebony for turntable bits in the past) - however, the very fine particulate grain of these woods means they are more akin to materials like Delrin (or even Tufnol) than they are to most other woods.

I think that there is a common misconception that items that reproduce music should themselves emulate the construction of musical instruments (turntables, cartridges, arms and speakers). The reality is that the musicians play the instruments - the playback system isn't another musical instrument, it is a measuring and reproduction instrument - it should replay that which it is given and not add random extra levels of distortion. Musical instruments are designed to colour the sound in specific ways, the musician works with this to create the sound they want - there isn't supposed to be another set of distortions overlaid on top of that by the reproduction components.

thanks,
i made an ebony arm board for my AR turntable before i went to the lp12,it made a big difference over the standard one,i also tried lacewood, acrylic and an mdf aluminium sandwich.the ebony one sounded the best,i may make one for the lp12 ,if i still had my wood working machines id make a matching plinth too.

[YNWaN]

Did you try aluminium on its own, without the MDF element? The armboard I currently use in an aluminium/aluminium sandwich with a viscoelastic compound joining them. Before that I used a very similar design but made from carbon fibre and before that a carbon fibre component similar to that used in the chassis.

[karma67]

no i never did,the aluminium sandwich one sounded awful so i never persevered .

[YNWaN]

I have found that laminating materials can give very different results depending on the precise specification of the materials and implementation.