It's crucial otherwise you won't know if (or how much of) your effect is due to wear.Good suggestion! Need to know typical measurement variance to be sure of wear variance accuracy.
It's crucial otherwise you won't know if (or how much of) your effect is due to wear.Good suggestion! Need to know typical measurement variance to be sure of wear variance accuracy.
Yeah, most on the web aren't good. I use these developed by Scott Wurcer. They only work for 96k recordings in Audacity as nyquist commands. It is what is used in the script.What plugin do you use for fully accurate digital RIAA? I experimented beck in the 90’s with the Waves RIAA EQ plugin preset but was not happy with the results. Just went with a fully balanced RIAA solid state pre made by Audio Research (SP2, i think).
Perhaps we are discussing different things.It's crucial otherwise you won't know if (or how much of) your effect is due to wear.
I wasn’t clear. my bad. By “each” I meant at the beginning of one setup and at the end of wear plays for that setup. Not each separate cartridge.No real need for several reasons. First, there are plenty of examples on the measurement script thread and its not so bad once you establish how a record performs. And most importantly, there is no real benefit because of how the experiment is set up. As they will be removing the cartridge to image it, the concern should be on making sure it is comparably set-up after each step. That's the concern that was mentioned here and why the experiment is only a first step. To properly measure it over the long run, you will need to minimize variables, which also means leaving the cartridge alone. Still, the first run should show interesting results.
Note that only the stylus will be removed, not the whole cartridge. This should minimize any setup shifts.No real need for several reasons. First, there are plenty of examples on the measurement script thread and its not so bad once you establish how a record performs. And most importantly, there is no real benefit because of how the experiment is set up. As they will be removing the cartridge to image it, the concern should be on making sure it is comparably set-up after each step. That's the concern that was mentioned here and why the experiment is only a first step. To properly measure it over the long run, you will need to minimize variables, which also means leaving the cartridge alone. Still, the first run should show interesting results.
@GXAlan , Hours? It takes me 10 minutes from I finish brushing my teeth, until I have the chart ready for publishing. That is getting the laptop, connect it to my Puffin, get the record out, dust off the record, record the thrack in CoolEdit pro, edit the file, Open the Python script an run the edited files. Bingo , finished. Simple when you are used to it. But optimizing a cartridge can take anything from 1 hour, to 4 hours or even 2 days.
No worries. I was using a colloquialism which may be not be universally interpreted.Opppsss. My wife said I never listen properly, now I cannot read good either,….
Yes, would be nice to know.What I was asking is how many hours separates the new vs worn stylus
Is worn 50 hours? 100 hours?
No clue. The cartridge came with a second hand turntable and was usedYes, would be nice to know.
Since we have no information on how these two styli "sound" subjectively, all we can do is analyze the objective performance vs wear hours.This is where there is a profound error in reasoning....
it is subjectively at what time (and what circumstances) I consider my diamond worn and that it bothers me..
and observes in different cases if corresponds to observation constants of wear of the diamond visually, or
by observing objective measurements of distortions etc.
but the first reflection concerns... the subjective...
@Digby, I'm glad you asked. We got off on a huge boiler full of steam, only to be derailed post haste. That is to say, we or more accurately @BMRR (Vinyl Engine, SHF) who is running the actual turntable, got it all set up, AT VMN95E cartridge aligned, climate controlled and ready to turn to the right. Then he discovered the automatic return system on the Sanyo Q50 began to not work properly. So we delayed the start until we could sort this, we even considered using an alternative turntable. But after some searching and work, our pilot secured a new belt for the turntable for proper automatic return function. It's installed as seen in this link on Vinyl Engine by BMRR » 14 Jul 2023 11:32 (https://www.vinylengine.com/turntable_forum/viewtopic.php?f=19&t=134294&start=48), the Sanyo is operating properly so now we are up and running.
Today, @BMRR recorded the entirety – Side A and Side B – of the CBS ST-100 NOS test lp.
The experiment procedure in general begins as follows:
Records NOS CBS STR100 (T0).
Plays 1 vinyl record, both sides for ~12 hours each (T24), test stylus sent for photomacrographic imaging.
Imaged stylus (T24) returned along with a separate new AT VMN95E styli.
Re-records CBS STR100 with both styli.
Play record both sides ~12 hours each, ship test stylus for photomacrographic imaging. Returned for
Re-records CBS STR100 with both styli (T48).
Play 2 records both sides ~12 hours each, ship test stylus for photomacrographic iimaging and and return,
Re-records CBS STR100 with both styli (T96).
And so on until we are ~500 hours, possibly longer. Also see the initial post in this thread for our overall procedure.
See this link to the T0 recordings for both sides of the NOS CBS ST-100 test record:
https://drive.google.com/drive/folders/14le9fH-yCUWyEL3C0xBFaEJLriiqXwkH?usp=drive_link
USER has generously agreed to run the analytical program to sort out the progressive performance of the test stylus throughout this experiment. The performance will be referenced to the new stylus as well.