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Re: plinth..: heavy is usually good

Posted by munna on June 17, 2005 at 05:33:33

In Reply to: Re: plinth..: heavy is usually good posted by J.D. on June 16, 2005 at 17:51:10:

HI J.D

plinth shape... may make a difference ... same weight plinth in
27" long plinth seems to sound better than in 22" long plinth. i think because of stabilty.. width may need to be about 2/3 height.

stand height ... just common sense to make the heavy thing more
stable... i think souund quality will suffer audibly if rack can
be made be perfectly level without shimmying.

footers... i have tried about 4-5 types of cones (varying size from 1" to 2" and material from wood to brass to aluminium). i dont
hear much difference when plinth is about 100 pds. so frankly the
$4 brass cones from Madisound maybe the sensible choice. also
going from rubber feet to conepoint on 50-pd chipboard plinth made some difference...
but cone to rubber feet on 100-pd ply plinth made very little difference. i think the key is mass.. heavier the plinth, the less
everything else matters.

bolting... unfortunately, have not played with this that much. but
it has always vexed me. i try to use the smallest softest aluminium
washers. i try to avoid rubber.. but have not really compared
mounting schemes too much.. i focused more on size/shape/material composition of plinth. but comparing 301 & 401 bolting schemes
.. 301 has 4 holes will means 4 bolt from to top to heavy plinth.
401 has needs to be bolted from bottom with 4 not so big bolts. this
means that the 401 has to be bolted to a board which then needs
to be bolted to another board.. this means 2 layers of bolting is requirted. frankly, i can hear the hear difference between 301 & 401
but the difference between the 2 bolting schemes is hard to detect.
needless to say i much prefer the 301 bolting scheme but wish i could try bolting with
8-12 holes instead of 4. my friend seems to think 3 very heavy
bolts is audibly better. i think here again, the heavier the less
significan the bolting scheme.

material.. .. as mentioned earlier they make a big difference. i want to compare the following: 1)layered birch ply; 2)layered solid wood (cherry/maple, etc) 3) layers of different material

rgds
munna

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