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hi finyl vinyl,
if money is not an issue you could look at importing these layered wood designs floating around on ebay.
301 garrard plinth, Electronics. Great deals on eBay!
they make for both 301 and 401 on order if you ask i think. i was looking at one of these myself, the $120 one for starters.
for plinths i have not yet come across a plinth made from either material. because most are layered plinths (usually wood) and not solid block.
for my end plinth i am eyeing the slatedeck plinths made of slate :licklips:
if you're looking to custom make your own plinth do choose a layered wood, from what i've read, a sort of plywood structured wood if you can get what i mean is ideal. birchwood seems to be first choice for many. there was a hong kong guy who made a plinth from the slatedeck guys out of granite. this was a single slab with the cutouts for the garrard and arm.
then there's the shindo plinth
Granite and Corian (Dupont stuff) are other options. But the easiest way is to have nearly 5-6 layers of MDF / Plywood glued together and cut out made for the shape required by 401.
The design options are based on two principles: Energy absorbtion - massive, thick plinths, and Energy utilisation, the latter to try and turn the idler drive energy to boost the 'kick' factor that the 401/301s are famous for.
Incidentally, the motor vibration is not the prime concern - it is suspended on 6 springs which effectively take care of that. Rather, the motor spindle/idler wheel/platter/bearing interface that, if not smooth as silk, can transmit vibrations that will be picked up by the stylus/tonearm. If you oil the motor, have a true idler wheel (use sandpaper on the 78 speed carefully to make it as true as possible, outside of using a lathe device), clean the inner rim of the platter, and also oil the centre spindle bearing (and hopefully, there is no 'play' there), then you're on your way.
i forgot the loricraft style plinths that involve the top wood sheet sitting on rubber suspension platforms in all four corners. something like that. you can check it out online. this is the other option to a layered plinth stacked one sheet on another.
How do you oil the spindle? and why sandpaper the 78 speed? how do you take the platter off in the first place?
RSVP post haste: Mother serious, sister anxious father delirious. Munna hasn't eaten in four days and has not gone to school. Even the dog is forlorn. Need to know how all this is done.
Squash balls to be exact.
well i can help you with the platter bit. yer supposed to tap gently on the top spindle and lift the platter up. ideally helps to have two people do this. the spindle is a taper fit so a gentle tap with a wooden thingie ought to release it a bit. gently does it else the forlorn dog is gonna howl at the moon for many a moon oiling there is a felt roundel at the base of the spindle that you'll see once you lift the platter. if its very old simply replace with new felt cut to fit! simply put a few drops in, i forget whether its a few drops or you're supposed to get it really wet g401fan can clarify or you can check online. there is a complete strip step by step process online done by this guy who makes his own 14" arms forget his name right now... gimme a few days i'll dig up info i've saved and forward to you.
EDIT: please dont use MDF! from all reports not a good material. even the link that ummm was it g401fan posted the guy in that link says that mdf sounds deadish.
Squash balls to be exact.In the loricraft plinths there are triangular wooden corner braces, with a hole cut in them that the balls rest in so they dont roll.The plank that the TT is mounted on is around one and a half inch thick.
I have tried both the soild layered plinth (marine ply) and the skeletal plinth resting on squash balls.
I prefer the skeletal plinth, it sounds a little more relaxed. The solid plinth has better bass and leading edge transients,but sounds over controled and relentless after a while.
...The hassle is how to layer, glue and fix 4-5 boards of 1" to 1.5"? He says that the equipment for that is specialised. And then this thick mother needs to be laminated with a special membrane that looks like high gloss finish teak or something like that
I'm going to try and get him to work a solution.
Many thanks. Look forward to the info. When you're talking slate, do you mean that black stuff they use on blackboards or the stuff they use under billiards tables. Mahi, if you're following this thread, do you know who sells slate to table manufacturers?
what wood did you use for the box and for the top slab?
How do you think a mass-loaded TT on layer of wood suspended on squash balls would fare? Would this be better than mounting the TT on spikes?
Are the holes drilled through and through or only on one surface? Is the plinth teak/acrylic/ply? I'm assuming marine is ply or international standard packing crate wood
do you enclose the skeletal plinth from the front, sides and back? If not, how do you control dust?