Quote Originally Posted by Pegwill View Post
Hi Guys

Continuing the theme of dampening the chassis. On my Gyrodec if I tap the chassis in the middle front with my finger nail and trying to use the same amount of force /pressure keep taping the chassis between the front pylons and listen to the note it’s quite high. I think that’s where the lead weight is it produces a distinctly higher note I can’t quite see where the lead weight is, the Dec needs to be in a better position. If you continue tapping every few militmetres as you move around the chassis the note goes lower. The lowest note being produced around where the motor fits. I suspect that where the arm fits will perhaps be the same but it’s quite difficult to get my big fingers in. I believe this could do with damping to try and get the same note all round. I will try and do this at the weekend.
It is such an easy thing to check you can even do it with a record playing.
Id love to hear your thoughts, should we really looking for the same note from anywhere on the chassis? Or is that going to kill the sound and make it lifeless. I was suprised just how different it sounded from front to back. My thoughts are it should be the same all round.
The effect of put weight of lead or whatever it is around the chassis will be to create an isolated sections with different sonic properties, hence the different tonal sounds.

There are several things that can be done. Simplest and probably cheapest but not necessarily most effective IMO is fill the holes in with a heavy substance, like on the Orbe. Second is to remove the weights and then fill all the webbing in with a suitable heavy material, this is tricky as the weights are there to counterbalance the arm. IMO Finally throw the chassis away and make it out of a solid and dense material and probably without holes in the middle, if it is heavy enough it should overcome out of balance issues of the arm. It certainly should dampen any vibrational issue through it to some extent, obviously you would need to address the suspension issues with the additional weight, or it might be easier to forget about them and have it directly mounted on isolation feet carefully designed with vibration absorbing material, but by now you would have a new deck. [emoji2]