Some years ago i bought my first lenco, an l76s and with that came a complete drawing for building a lenco plinth from lenco heaven. The owner before me never came to it to build a plint, so he gave it to me.
He had done some upgrades like a new rca cable, dampened the idler arm and told me that there were lots of tweaks to find on lenco heaven.
Now during corona time, i have read a lot on lenco heaven and that made me so enthusiastic that i started to build some phlints
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I first made some different templates out of 5.5 mm plywood because the paper templates didn't last long, and these i can use over and over.
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I made some templates just the same as you can download from lenco heaven, but i noticed that with the original template to many wood was cut away and i thought mass (weight) is better so i made some extra sets of templates, one for use with the original lenco arm and one for use with a non lenco arm with lesser wood to cut away.
Here is my first lenco with a plinth made from the lenco heaven (download) plinth. I sprayed it in a granit look which i have used a lot also for spraying home made loudspeaker cabinets.
With the new templates there is more wood to support the metall pan and the motor compartment is smaller but the motor can still move enough without touching the wood.
Here is a plinth that i made with the new templates for a lenco with the original tonearm,i still have to glue it together.
And the top layers for a lenco plinth with a non original lenco tonearm
I still have to made some extra holes in it and probably have to cut some extra wood away, but i will do that when my other tone arm (rega rb 300 arrives)
Here is a pile of plintwood that is already ready and only have to be glued together
Now i have some questions.
1. On the original lenco heaven plinth there is a lot of wood removed under the tone arm, is that neccesary for say sonic improvement or can i just cut away what is necesary, so just drill a hole under the arm pillar, through and through till the bottom, like you can see on the photo of this plinth.
2. I have read a lot about how to buil a plinth and which materials to use, i have chipboard,MDF and plywood all 18 mm and for the topplate i use birch plywood that varies from 8-11 mm because i noticed that not every lenco frame has the same thickness.
i want to make a layerd plinth from different materials mentioned as above, can someone give me some ideas how to build up a plint say about 5-6 layers from 18 mm and in which order they build the plinth, say for example first two layers off 18 mm chipboard and then 3 layers off 18 mm MDF.
I hope you guys here can give me some ideas for building a good sounding plinth and maybe some other things that i have forgot to think about.
Dennis.
