I have been waiting to do this after addressing the TT isolation as much as I believe is possible, then will fit the rubber bushes under the acrylic arm spacer mounting plate so that I can then know what difference the rubbers make. I like to make incremental changes.Originally Posted by mad-moon
Quote Originally Posted by AJSki2fly View Post
Thanks Pete, still a few things to do, more arm board isolatio, waiting for rubber bushes, rubber to support the motor inside, and try out and test my mod for the new feet, and fit the sorbothane discs on the pylons.
Looking at your toneam..it looks to have the same issue as mine...it's flying in space....another inexpensive tweak, which takes little effort...is to put the rubber mounts under your acrylic spacer....which will allow you to bring your arm right down into the clamp...it has made a huge differencce with mine regards record surface noise...If you don't fancy the mounts, you could always put the three delrin posts back in..under the acrylic spacer/mount....
[IMG]MOUNTS DISC by alan moon, on Flickr[/IMG]
By the way my understanding is that how the arm is fixed to a TT can have quite a dramatic impact on how it all sounds. Arms I believe are mainly designed to take vibration away from the head shell/cartridge, so if you mount it in a way that effects this it could have a positive or negative affect. Some arms I believe actually need to be mounted rigidly to the TT chassis, if you look at an SME TT with SME arm it is mounted rock solid, but then the SME chassis is a dirty great big heavy lump of laminated steel and aluminium designed to not vibrate. Unfortunately this is not the case with the Gyrodec or Orbe chassis so we are effectively trying to limit any vibration transmission into the arm mount, how good any change in mounting will be and what affect it may have on the arm I am not clear about in my mind. So for me I think I will have to rely on what I hear.
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