Post by Owen Y on Oct 14, 2019 8:46:05 GMT 12
So VTA & VTF probably needs to be readjusted after 50 hours (so it's fully run-in)? It's normal that it takes some time (depending on cartridge) for the new cartridge suspension material to 'run-in' - similar to loudspeaker suspensions. The sound may change a little & the VTA also possibly, as the suspension loosens and/or possibly 'settles'. What cartridge & tonearm/TT?
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Post by Owen Y on Nov 23, 2019 10:53:52 GMT 12
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Member
Post by tabarddn on Mar 13, 2021 12:57:53 GMT 12
''VTA is 20 degrees. If that's the case then isn't SRA also automatically set by the manufacturer to 92 degrees?''
Hi Guy's, you would hope that this is correct but it is absolutely not. on V/Engine there is a list of measures VTA's from about 35 various manufactures & from memory it ranged from 10 deg to 35 degs, with only a couple on manufacturers being spot on. The old but still widely used Ortofon MC15 was set to 15 deg's because that was the vinyl lathe cutting standard, then a few years later it changed to 20, hence the Ortofon MC 20 was born. However even if the VTA at 20 degrees, it rarely means in my experience that the SRA (this is the most important angle to get correct) However the SRA only needs to be adjusted for exotic styli, for Spherical & Elliptical it does not matter have the arm parallel. I set my SRA up using a USB microscope & it definitely in a high resolution system makes a difference. You can do it by ear ad previously advised, but that way is a bit (shall we say) pot-luck.
Cheers
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Post by Owen Y on Mar 13, 2021 19:47:49 GMT 12
Greetings & welcome, tabarddn. Yup in theory, you can set up for 'correct' VTA or for 'correct' SRA, but cartridge setup is not an exact science, there are quite a few factors that vary unfortunately. SRA can be set up using a microscope as Fremer proposed, but stylus profiles vary from convention, some with contact angles not aligned to stylus shank angle (eg. Geiger, Replicant). Other variables... - Euro & USA mastering/cutting lathes differed (in their vertical modulation (movement) angles. - Vinyl 'springback' during record-cutting, was something they identified way back, but can only approximate a correction for. So, at end of the day, the above is only a starting point, still need use & trust your ears to get it 'right' - IMHO/IME.
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