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I was talking to some "older" people today and they were telling me records will wear out after being played a bunch, is this true? newb question
As much as I would have liked to say this is not the case - unfortunately records do wear out with playing. It is only question of degree. It can be held to an acceptable degree with the proper choice of the cartridge and arm.
You DO NOT want to know all the nitty gritty of it. Suffice to say - the lower the tracking force needed for still acceptable trackability, the higher the stylus to vinyl contact area (thus minimising the actual pressure on the vinyl ) - the better. Remember one thing - if you think that stylus is tracking at whatever preset VTF value while actually tracking the actual real world groove on the real world record - please find that Bruel & Kjaer link I posted more than often enough in this thread. It is clearly shown that VTF is ANYTHING but constant while playing, with peaks ( due to warps etc ) sometimes exceeding nominal value by 200 % or more - and more dangerously, there are moments where cart/stylus is tracking at NEGATIVE (!) VTF.
Shure used ( back in the days they were serious player in analog ) to publish the Scanning Electron Microscope images of record grooves - usually some hot recordings in the treble, where they wanted to show off their better offerings. Usually, an unplayed groove was shown first, than the same groove played by Shure x times, then same groove played by Shure nx times ( with slight wear visible ), than the same groove played once with a competitor's TOTL, usually MC cartridge - not a pretty sight to see, let alone listen. Once I get my scanner up, I will post those photos.
Here is a link to Shure V15V Users Manual http://www.vinylengine.com/library/shure/v15.shtml . It covers trackability and record wear issues with more openess than seen anywhere else. You will have to register with the vinylengine - but I guess that w 1ill not prove to be a problem to anyone reading this thread. I only recently found this document regarding playback noise increase when using conventional grade of stylus polishing vs then state of the art Shure MASAR polishing http://www.vinylengine.com/library/shure/ml140he.shtml
Unfortunately, the current trend towards low compliance cartridges and 12 " arms, with nominally higher VTfs and in excess of 50 % increase in inertia
( inertia is function of the distance from the fulcrum SQUARED - 9 inch arm is 9squared = 81, 12 inch arm is 12 squared = 144 - and is a single most offensive factor regarding record wear ) is very bad news for record wear. Playback equipment manufacturers keep as low profile as possible regarding this - and get away with it, as hardly any objective measurements of phono equipment is published anymore.
Physics laws and vinyl properties have not changed. Apply the figures in V15V regarding stylus shape, mass etc to current VTFs, factor in variation of VTF as shown in the Bruel & Kjear paper, multiply it by 50 % in case of 12" arm - and take off the rosy picture glasses. Unless you want to count the plays of your new record before serious degradation in sound quality occurs with fingers of your single hand.