Ok, as a picture paints a thousand words the construction of the plinth is pretty self explanatary. First photo shows the Walnut mitred and glued together with all the bracing in place.
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Next is the top plate and the armboard. The armboard is upsidedown, the recess is for the mounting nut for the RB300. There are 3 clearance holes in the armboard recess and the armboard is decoupled from the top plate by a rubber gasket made from a old innertube. The screws are inserted from underneath and are also decoupled with rubber tap washers. It works well but is not a very accurate meathod of possitioning the arm, I need to work on this further.
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Finally a close up of the corner bracing showing the squash balls that are used to support the top plate. One problem I have is the top plate settling due to the weight of the motor unit. I will need to look into this also for the final version.
Soundwise I am chuffed to bits with the Garrard. It sounds weighty with a wonderfully deep and clean bass but seems very nimble with it. Not at all what I would expect a 30 or 40 year old turntable to sound. It realy desrves more than the £22 Ortofon MM its got at the moment!
For the final version I will look out for a nice bit of mt favourite timber, English Elm. The top plate will be covered in leather and as already stated a more accurate armboard system needs developing.
Another veiw of the finished article giving a better veiw of the decoupled armboard. The recess in the top plate was achieved by cutting a 3-1/2" hole in a piece of 6mm mdf and then glueing that to the 18mm birch ply top plate.
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