Originally Posted by calipilot227
That is EXCELLENT! You need to start a turntable modding thread
I do not find it a particularly good idea.
Why? because it IS black hole - not just rabbit hole - for time and money.
Turntable is unfortunately , despite being 100 or so years old idea, still not correctly understood. It is the most precise and sensitive contraption one can actually have in the home - bar none. Stylus is capable of retrieving detail ( as verified by measurements on spectrum analyzer ) that CAN NOT be seen on the scanning electron microscope shots of the portion of the groove where this low level signal is recorded. That should give you an idea that structuraL resonances in turntable materials, dwarfing the inherent capabilities of stylus by many orders of magnitude, are the real culprit that prevents analog vinyl replay to actually achieve greatness it is inherently capable of.
Resonance control/prevention - no matter how you might want to call it - is being only partially adressed in actiual turntable designs - even the very best and most costlier.
The reason is simple - cost. Casting a metal platter is incomparably cheaper than machining the same out of solid block of metal, not to mention making a carefully designed and executed platter out of combination of materials that allow for the lowest resonance signature possible. The first can be mass produced, the later is next to impossible to produce without having to involve manual labour - and that is $$$.
Plinth, although it can contribute to the performance of the TT overall, is merely a band aid if the platter is a singing merry go-along-forever affair - which unfortunately describes most of actual turntables in use today. As a matter of fact, ANYTHING that is not absolutely essential for the basic operation, such as plinths, covers, levers, dials, displays, etc, etc - can be and is detrimental to the sound. That is why there are finally some stripped to the bone designs dispensing with all the unnecessetties of record replay emerging - Kuzma Stabi S (knowing the TRUE origin/designer of this design makes me sick whenever I see it... - but it was commercially made available by Kuzma), Funk Firm's next-to-nothing designs ( shamelessly copied by the latest/costliest Rega, built with better materials/tolerances, at punishing price ) - and I may have left a few others that fit into this less-is-more category. The opposite approach is that of EMT, where the whole design is so precisely executed that there is tightening torque specified for any screw that has an influence on resonance control - the big EMT DD TT is among the best sounding decks out there, despite being a pro design where reliability is the priority #1.
How critical materials in turntables are is best described in Lencoheaven forum - there is any variation/combination that still is within the reach of even VERY high heeled enthusiast. Any idea how much might a theorethically desirable plinth out of - carbon fibre/boron/diamond ( in increasing order of desirability ) - COST ? Carbon fibre is perhaps still within the reach of the most experienced/well-to-do DIYers - other two are wishful thinking even for the largest manufacturers.